phan tich thanh nhan tu \(x\sqrt{x}-3x+4\sqrt{x}-2\) voi x>0
\(\sqrt[3]{x+6}+\sqrt{x-1}+1-x^2\)Phan tich thanh nhan tu
5x + \(7\sqrt{xy}-6y+\sqrt{x}+2\sqrt{y}
phan tich thanh nhan tu
phan tich da thuc thanh nhan tu
5x+ 7$\sqrt xy $ -6y+$\sqrt x $ - 2$\sqrt y $
x^8+3x^4+1
Gup mk phan tich da thuc thanh nhan tu voi!
\(x^8+3x^4+1=\left(x^8+\frac{2.3x^4}{2}+\frac{9}{4}\right)-\frac{5}{4}\)
\(=\left(x^4+\frac{3}{2}\right)^2-\frac{5}{4}=\left(x^4+\frac{3-\sqrt{5}}{2}\right)\left(x^4+\frac{3+\sqrt{5}}{2}\right)\)
Kết quá của t là: \(\left(x^4-\frac{-3+\sqrt{5}}{2}\right)\left(x^4+\frac{3+\sqrt{5}}{2}\right)\)
Ghê chưa
b2. phan tich da thuc thanh nhan tu
1.x+2\(\sqrt{x-1}\)
2.x-2\(\sqrt{x-1}\)
3.x -4\(\sqrt{x-4}\)
4. x+4+4\(\sqrt{x}\)
a/ \(=x-1+2\sqrt{x-1}+1=\left(\sqrt{x-1}+1\right)^2\)
b/ \(=x-1-2\sqrt{x-1}+1=\left(\sqrt{x-1}-1\right)^2\)
c/ \(=x-4-4\sqrt{x-4}+4=\left(\sqrt{x-4}-2\right)^2\)
d/ \(=\left(\sqrt{x}+2\right)^2\)
Phan tich da thuc thanh nhan tu
\(x+3\sqrt{x}+2\)
\(2x+\sqrt{x}-3\)
\(x+\sqrt{x}+2\sqrt{x}+2\)
= \(\sqrt{x}\left(\sqrt{x}+1\right)+2\left(\sqrt{x}+1\right)\)
= \(\left(\sqrt{x}+2\right)\left(\sqrt{x}+1\right)\)
\(2x-2\sqrt{x}+3\sqrt{x}-3\)
= \(2\sqrt{x}\left(\sqrt{x}-1\right)+3\left(\sqrt{x}-1\right)\)
= \(\left(2\sqrt{x}+3\right)\left(\sqrt{x}-1\right)\)
\(\left(2x-10\right).\left(x+10\right).\left(x+\sqrt{3}\right)=0\)
(Bai phan tich da thuc thanh nhan tu)
PTĐTTNT ??? :)) bn phân tích rồi đấy, đề là tìm x thôi
Giải ( suỵt :), đừng ai nhìn thấy ... :v
\(\left(2x-10\right)\left(x+10\right)\left(x+\sqrt{3}\right)=0\)
TH1 : \(2x-10=0\Leftrightarrow x=5\)
TH2 : \(x+10=0\Leftrightarrow x=-10\)
TH3 : \(x+\sqrt{3}=0\Leftrightarrow x=-\sqrt{3}\)( vô lí )
Vậy x = {5;-10}
sao lại "vô lí" vậy bạn
lp 8 chưa học số vô tỉ babe nhá :))
phan tich thanh nhan tu x2-3x+4=?
x2-4x+x+4
=x2+x-4x+4
=x(x+1)-4(x+1)
=(x+1)(x-4)
phan tich thanh nhan tu x2-3x+4=?
\(x^2-3x+4\)
\(=x^2+x-4x+4\)
\(=\left(x^2+x\right)-\left(4x+4\right)\)
\(=x\left(x+1\right)-4\left(x+1\right)\)
\(=\left(x-4\right)\left(x+1\right)\).