X^2 -5x+6≤0
\(< =>\left(x^2-2x\right)-\left(3x-6\right)\le0\)
\(< =>x\left(x-2\right)-3\left(x-2\right)\le0\)
\(< =>\left(x-3\right)\left(x-2\right)\le0\)
\(< =>x\le3;x\le2\)
Vậy....
X^2 -5x+6≤0
\(< =>\left(x^2-2x\right)-\left(3x-6\right)\le0\)
\(< =>x\left(x-2\right)-3\left(x-2\right)\le0\)
\(< =>\left(x-3\right)\left(x-2\right)\le0\)
\(< =>x\le3;x\le2\)
Vậy....
Giải bất phương trình
a, x2-5x+6<0
b, x2-5x+6<0
x^2 + 5x + 6=0 b,x^4 + 7x^2 - 8=0
giải pt :
√x^2 -4x +6 = x+4
√(x^2 -3x +2 ) -3 -x =0
√ 5x-1 -√3x-2 -√x-1 = 0
√x+1 + √x+10 = √x+6 +√x+5
√x+1 + √5x =√4x-3 + √2x+4
3x-6+(x-2)(√5x-6)=0
giai cac ptr sau
a,\(x^4-5x^2+4=0\)
b,\(2x^4-3x^2-2=0\)
c,\(x-5\sqrt{x}-6=0\)
\(x^2-5x+14-4\sqrt{x+1}=0\Leftrightarrow(x^2-4x+4)-(x+1-2.2.\sqrt{x+1}+4)+6=0\Leftrightarrow(x-2)^2-(\sqrt{x+1}-2)^2+6=0\Leftrightarrow tính\)
gải phương trình sau
5/-x^2+5x-6 + x+3/2-x = 0
1)\(-x^2+4x-6+\frac{21}{x^2-4x+10}=0\)
2 ) \(\frac{3x}{x^2+5x-5}+\frac{x^2+5x-5}{x}+4=0\)
Chi tiết giùm mình nhá
giải phương trình sau:
a) \(4x^2+\left(8x-4\right).\sqrt{x}-1=3x+2\sqrt{2x^2+5x-3}\)
b) \(8x^3-36x^2+\left(1-3x\right)\sqrt{3x-2}-3\sqrt{3x-2}+63x-32=0\)
c) \(2\sqrt[3]{3x-2}-3\sqrt{6-5x}+16=0\)
d) \(\sqrt[3]{x+6}-2\sqrt{x-1}=4-x^2\)