Question

5 Which expression could NOT be a factored form of

the expression below?

10x-20
A: 10(x-2)
B: 5(2x-4)
C: 2(5x-20)
D:-2(-5x+10)

Answer 1

c

Explanation:

if you factor the 2 back into the brackets (that is, multiply everything in the brackets by that 2) you’ll get:

2*5x-20* which is 10x-40 (I.e. not 10x-20)