Question

answer the questions at the attachment​

Answer 1

Correct Answers...

4)b

5) a

Answer 2

Answer:

(a+✓b)(a-✓b)

we know that (a+b) (a-b)= a²-b²

means .. a²-✓b²

a²-b answer.so 4th question answer is D

Step-by-step explanation:

in 5th question.

(✓a+✓b)² = ✓a²+ ✓b² +2(✓a)(✓b)

a+b+2✓ab

because from the formula (a+b)²= a²+b²+2ab