Question

pls answer these questions i will give extra marks. I can't crop one question. pls give answers or else I would report answers that are irrelevant ​

Answer 1

2. 4

3. 90°

4.

112²-111²

= 112×1 [(a²-b²) = (a+b) (a-b)]

= 223

Answer 2

I hope this helps you & I wish you good luck!