Question

6 4√4 – 7 3√4 + 2 3√4 – 3 4√4
a. -2√4
b. -2√8
c. 3 4√4- 5 3√4
d. 3 4√4- 5 3√8

Answer 1

64*2-73*2+23*2-34*2
128-146+46-68=-40

Answer 2

=6 4√4 – 7 3√4 + 2 3√4 – 3 4√4
=24 √4 - 21 √4 + 6 √4 - 12 √4 = -3 √4

So the answer is c, because of

3 4√4- 5 3√4 = -3 √4
= 12√4- 15√4 = -3 √4