To divide fractions, you need to multiply by the reciprocal. The reciprocal of 3/4 is 4/3, which is why the work is incorrect.
See attached:
Answer:
12 + 8 + 12 + 4
Step-by-step explanation:
Using the rule of radicals
× ⇔
Given
(4 + 2 )(3 + 2 )
Each term in the second factor is multiplied by each term in the first factor, that is
4 (3 + 2 ) + 2 (3 + 2 ) ← distribute both parenthesis
= 12 + 8 + 12 + 4