Answer:
16.) 28 - 4√2 + 7√7 - √4 (1st choice)
17.) 17√3 (3rd choice)
Step-by-step explanation:
16.) (4 + √7) (7 - √2)
4 × 7 = 28
4 × -√2 = -4√2
√7 × 7 = 7√7
√7 × -√2 = -√14
So, the answer is 28 - 4√2 + 7√7 - √4 (1st choice)
17.) 10√3 + 7√3
= 17√3
So, the answer is 17√3 (3rd choice)
Hope it helps and is useful :)
