Question

Please help me
This is urgent​

Answer 1

Answer:

1st bit

1. Option B.

2. Option C.

3. Option A.

4.Option A.

5. Option A.

6. Option A.

Step-by-step explanation:

2nd bit

1. (2a)^2-(7)^2

4a^2-49

2. (b-7)^2

= b^2+7^2+2×b×7 ( a-b whole square is a square plus b square minus two ab. ) formulae.

=b^2+49+14b.

3rd and 4th bit I dont know