Violympic toán 9
Các câu hỏi tương tự
\(\left\{{}\begin{matrix}2x^3-4x^2+4x-1=2x^3\left(2-y\right)\sqrt{3-2y}\\\sqrt{x+2}=\sqrt[3]{14-x\sqrt{3-2y}+1}\end{matrix}\right.\)
Giải phương trình:
1, \(x^2+2x\sqrt{x-\dfrac{1}{x}}=3x+1\)
2, \(\left(13-4x\right)\sqrt{2x-3}+\left(4x-3\right)\sqrt{5-2x}=2+8\sqrt{16x-4x^2-15}\)
3, \(7\sqrt{3x-7}+\left(4x-7\right)\sqrt{7-x}=32\)
1,giải phương trình:
\(\sqrt{-x^2+4x-3}+\sqrt{2x^2+8x+1}=x^3-4x^2+4x+4\)
2. giải hpt:
\(\left\{{}\begin{matrix}\sqrt{2x+1}+\sqrt{2y+1}=\frac{\left(x-y\right)^2}{2}\\\left(3x+2y\right)\left(y+1\right)=4-x^2\end{matrix}\right.\)
NC
14 tháng 1 2021 lúc 12:59
Giải phương trình 1, \(x^2+9x+7=\left(2x+1\right)\sqrt{2x^2+4x+5}\)
2, GPT \(\left(2x+7\right)\sqrt{2x+7}=x^2+9x+7\)
3. GHPT \(\left\{{}\begin{matrix}x^2-2y-1=2\sqrt{5y+8}+\sqrt{7x-1}\\\left(x-y\right)\left(x^2+xy+y^2+3\right)=3\left(x^2+y^2\right)+2\end{matrix}\right.\)
Giải phương trình:
1, sqrt{x^2+2x}+sqrt{2x-1}sqrt{3x^2+4x+1}
2, x^3-3x^2+2sqrt{left(x+2right)^3}-6x0
3, 2x^3-x^2-3x+1sqrt{x^5+x^4+1}
4, 5sqrt{x^4+8x}4x^2+8
5, left(x^2+4right)sqrt{2x+4}3x^2+6x-4
6, left(x^2-6x+11right)sqrt{x^2-x+1}2left(x^2-4x+7right)sqrt{x-2}
Đọc tiếp
Giải phương trình:
1, \(\sqrt{x^2+2x}+\sqrt{2x-1}=\sqrt{3x^2+4x+1}\)
2, \(x^3-3x^2+2\sqrt{\left(x+2\right)^3}-6x=0\)
3, \(2x^3-x^2-3x+1=\sqrt{x^5+x^4+1}\)
4, \(5\sqrt{x^4+8x}=4x^2+8\)
5, \(\left(x^2+4\right)\sqrt{2x+4}=3x^2+6x-4\)
6, \(\left(x^2-6x+11\right)\sqrt{x^2-x+1}=2\left(x^2-4x+7\right)\sqrt{x-2}\)
NH
28 tháng 2 2021 lúc 19:46
giải bất phương trình \(\left(\sqrt{13}-\sqrt{2x^2-2x+5}-\sqrt{2x^2-4x+4}\right)\left(x^6-x^3+x^2-x+1\right)\ge0\)
Giải phương trinh sau:
a, sqrt{left(x+1right)left(x+2right)} x^2+3x-4
b, 4x^2-4x-10sqrt{8^2-6x-10}
c, sqrt{left(x+1right)left(2-xright)1+2x-2x^2}
d, x^2+4x+52sqrt{2x+3}.
e, 2x^2+2x+1sqrt{4x+1}
f, x^2-6x+266sqrt{2x+1}
g,2x^2-4x+32sqrt{x-1}
h, ,4sqrt{x+1}x^2-5x+14
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Giải phương trinh sau:
a, \(\sqrt{\left(x+1\right)\left(x+2\right)}\) = \(x^2+3x-4\)
b, \(4x^2-4x-10=\sqrt{8^2-6x-10}\)
c, \(\sqrt{\left(x+1\right)\left(2-x\right)=1+2x-2x^2}\)
d, \(x^2+4x+5=2\sqrt{2x+3}.\)
e, \(2x^2+2x+1=\sqrt{4x+1}\)
f, \(x^2-6x+26=6\sqrt{2x+1}\)
\(g,2x^2-4x+3=2\sqrt{x-1}\)
h, ,\(4\sqrt{x+1}=x^2-5x+14\)
Mn giải giúp ai giải đúng tick điểm
Giải phương trinh sau:
a, sqrt{left(x+1right)left(x+2right)} x^2+3x-4
b, 4x^2-4x-10sqrt{8^2-6x-10}
c, sqrt{left(x+1right)left(2-xright)1+2x-2x^2}
d, x^2+4x+52sqrt{2x+3}.
e, 2x^2+2x+1sqrt{4x+1}
f, x^2-6x+266sqrt{2x+1}
g,2x^2-4x+32sqrt{x-1}
h, ,4sqrt{x+1}x^2-5x+14
Mn giải giúp ai giải đúng tick điểm
Đọc tiếp
Giải phương trinh sau:
a, \(\sqrt{\left(x+1\right)\left(x+2\right)}\) = \(x^2+3x-4\)
b, \(4x^2-4x-10=\sqrt{8^2-6x-10}\)
c, \(\sqrt{\left(x+1\right)\left(2-x\right)=1+2x-2x^2}\)
d, \(x^2+4x+5=2\sqrt{2x+3}.\)
e, \(2x^2+2x+1=\sqrt{4x+1}\)
f, \(x^2-6x+26=6\sqrt{2x+1}\)
\(g,2x^2-4x+3=2\sqrt{x-1}\)
h, ,\(4\sqrt{x+1}=x^2-5x+14\)
Mn giải giúp ai giải đúng tick điểm
a)sqrt{1-x}left(x-3x^2right)x^3-3x^2+2x+6
b)x^2+x+12sqrt{x+1}36
c)3x-1+frac{x-1}{4x}sqrt{3x+1}
d)sqrt{x^2+12}-3xsqrt{x^2+5}-5
e)4x^2+12+sqrt{x-1}4left(xsqrt{5x-1}+sqrt{9-5x}right)
f)4x^3-25x^2+43x+xsqrt{3x-2}22+sqrt{3x-2}
g)2left(x+1right)sqrt{x}+sqrt{3left(2x^3+5x^2+4x+1right)}5x^3-3x^2+8
h)sqrt{x^2+12}-sqrt{x^2+5}3x-5
i)sqrt{1-3x}-sqrt[3]{3x-1}left|6x-2right|
k)sqrt{2x^3+3x^2-1}2x^2+2x-x^3-1
l)sqrt{x^2+x-2}+x^2sqrt{2left(x-1right)}+1
Đọc tiếp
a)\(\sqrt{1-x}\left(x-3x^2\right)=x^3-3x^2+2x+6\)
b)\(x^2+x+12\sqrt{x+1}=36\)
c)\(3x-1+\frac{x-1}{4x}=\sqrt{3x+1}\)
d)\(\sqrt{x^2+12}-3x=\sqrt{x^2+5}-5\)
e)\(4x^2+12+\sqrt{x-1}=4\left(x\sqrt{5x-1}+\sqrt{9-5x}\right)\)
f)\(4x^3-25x^2+43x+x\sqrt{3x-2}=22+\sqrt{3x-2}\)
g)\(2\left(x+1\right)\sqrt{x}+\sqrt{3\left(2x^3+5x^2+4x+1\right)}=5x^3-3x^2+8\)
h)\(\sqrt{x^2+12}-\sqrt{x^2+5}=3x-5\)
i)\(\sqrt{1-3x}-\sqrt[3]{3x-1}=\left|6x-2\right|\)
k)\(\sqrt{2x^3+3x^2-1}=2x^2+2x-x^3-1\)
l)\(\sqrt{x^2+x-2}+x^2=\sqrt{2\left(x-1\right)}+1\)
Giai phuong trinh
1/ sqrt{x^2+4x+5}+sqrt{x^2-6x+13}3
2/ sqrt{3x^2-18x+28}+sqrt{4x^2-24x+45}6x-x^2-5
3/ sqrt{2x^2-4x+27}+sqrt{3x^2-6x+12}4x^2+8x+4
4/ sqrt{x^2+x+7}+sqrt{x^2+x+2}sqrt{3x^2+3x+19}
5/ left(x+2right)left(x+3right)-sqrt{x^2+5x+1}9
6/ left(x+4right)left(x+1right)-3sqrt{x^2+5x+2}6
7/ sqrt{2x^2+3x+5}+sqrt{2x^2-3x+5}3sqrt{x}
Đọc tiếp
Giai phuong trinh
1/ \(\sqrt{x^2+4x+5}+\sqrt{x^2-6x+13}=3\)
2/ \(\sqrt{3x^2-18x+28}+\sqrt{4x^2-24x+45}=6x-x^2-5\)
3/ \(\sqrt{2x^2-4x+27}+\sqrt{3x^2-6x+12}=4x^2+8x+4\)
4/ \(\sqrt{x^2+x+7}+\sqrt{x^2+x+2}=\sqrt{3x^2+3x+19}\)
5/ \(\left(x+2\right)\left(x+3\right)-\sqrt{x^2+5x+1}=9\)
6/ \(\left(x+4\right)\left(x+1\right)-3\sqrt{x^2+5x+2}=6\)
7/ \(\sqrt{2x^2+3x+5}+\sqrt{2x^2-3x+5}=3\sqrt{x}\)