Question

please can anyone solve these questions for me pls​

Answer 1

Answer:

3) a=0, b=1

4) 96+42root5 / 7+3root5

5) a^2+b^2 = 98

7) 2x+2=3x-1

2x-3x = -1-2

-x = -3

x = 3

I couldn't get 1, 2, 6 answers.