Question

PLZ HELPP expand and simplify by collecting like terms
-2(4x+2y)(2x-y)

Answer 1

-16x^2 + 4y^2

Explanation:

-2(4x+2y) x (2x-y)

(-8x-4y) x (2x-y)

-16x^2+8xy+8xy+4y^2

-16x^2+4y^2

Answer 2

-4( 4x^2 -y^2)

Explanation:

so I did the step on the paper

first line : is the equation itself

2nd line : I multiple the term in the parentheses together

3rd line: I multiple the - 2 to the term I got

4th line : I simplify it