Question

Which expression is NOT equivalent to 4x + 12y?

16(x + y)
2(2x + 6y)
(2x + 6y) + (2x + 6y)
4(x + 3y)

Answer 1

16(x+y)

Explanation:

16 times x + 16 times y= 16x+16y

2(2x+6y)=4x+12y

(2x+6y)+(2x+6y)=4x+12y

4(x+3y)=4x+12y

Hence, 16(x+y) is not equivalent to 4x+12y.

Answer 2

A

Explanation:

A because 16(x + y) = (16x + 16y)