Question

phan tich thanh nhan tu:

10x^2-1

Answer 1

= 10² * x² - 1

= 100 * x² -1 

Answer 2

\(10x^2-1=\left(\sqrt{10}x-1\right)\left(\sqrt{10}x+1\right)\)

Answer 3

\(\left(10x\right)^2-1=\left(10x-1\right)\left(10x+1\right)\)