1. In the week5 we learned radical and factoriel

For example: √6x=2.    (√6x)²=2²     6x=4

6x÷6=4÷6.    X=

For example:

(3x_1)²-(2y+5)²            3x-1=a.          2y+5=b

(a)²-(b)²               (a-b)(a+b)         (3x-1-2y-5)(3x-1+2y+5)

(3x-2y-6)(3x+2y+4) Continue reading →