Question
factor:
-20x^2 + 5y^2
-20x^2 + 5y^2
Answers
sunny
is it
-20x^2 + 5y^2
= -5(4x^2-y^2)
-20x^2 + 5y^2
= -5(4x^2-y^2)
sunny
no the answer is
-5(2x-y)(2x+y)
^is that right??
-5(2x-y)(2x+y)
^is that right??
Damon
Yes !!! You got it.
even the -1 * -1 = + 1 part
even the -1 * -1 = + 1 part
sunny
thankyou!