Question

Completely factor the expression
112x² – 567y²

Answer 1

first of all you can notice that 112=7*16 and 567=7*81

Answer 2

7(16x^2-81y^2)
now 16x^2=(4x)^2
81y^2=(9y)^2

Answer 3

Now you only need to know that (a-b)(a+b)=a^2-b^2

Answer 4

7(4x-9y) (4x+9y)