Question

5x的平方-10x+4怎么分解因式？

Answer 1

5x^2-10x+4
=5x^2-10x+5-1
=5(x-1)^2-1
=[根号5(x-1)+1][根号5(x-1)-1]
=(根号5 *x-根号5+1）（根号5 *x-根号5-1）

Answer 2

我写给你计算过程:
5x²-10x+4
=5（x²-2x）+4
=5（x²-2x+1）-5+4
=5（x-1）²-1
=[√5（x-1）+1][√5（x-1）-1]