Question

Which expressions are equivalent to x+x+x+2

Choose 2 answers:


(A) 3x + 23x+2

(B) 3+2x

(C) 3(x+2)

(D) 2(x+1)+x

(E) 5x

Answer 1

A and D

Explanation:

x+x+x+2=3x+2

A does work because 3x+2=3x+2 (I think A might've been a typo)

B doesn't work because the coefficients are switched

C doesn't work because that's 3x+6

D does work because that evaluates to 2x+2+x=3x+2

E doesn't work because it's not 3x+2x