Question

Select the expression that is equivalent to (x+4)^2-(x-4)(x+4)

Answer 1

$(x+4)^2-(x-4)(x+4)=x^2+8x+16-x^2+16=8x+32=8(x+4)$

the expression that is equivalent to (x+4)^2-(x-4)(x+4)  is 4(x+4)