Question

phân tích thành nhân tử với x>=0

a, x-1

b, x-\(\sqrt{x}\)-2

c, x\(\sqrt{x}\)+1

Answer 1

a) \(x-1=\left(\sqrt{x}-1\right)\left(\sqrt{x}+1\right)\)

b) \(x-\sqrt{x}-2=\left(\sqrt{x}-2\right)\cdot\left(\sqrt{x}+1\right)\)

c) \(x\sqrt{x}+1=\left(\sqrt{x}+1\right)\left(x-\sqrt{x}+1\right)\)

Answer 2

\(a.x-1=\left(\sqrt{x}-1\right)\left(\sqrt{x}+1\right)\\ b.x-\sqrt{x}-2=\left(\sqrt{x}-2\right)\left(\sqrt{x}+1\right)\\ c.x\sqrt{x}+1=\sqrt{x^3}+\sqrt{1^3}=\left(\sqrt{x}+1\right)\left(x-\sqrt{x}+1\right)\)

Answer 3

Tham Khảo:

a) 

b) 

c)