Question

5. If a - b = 6 and ab = 20, find the value of a
6. If x = -2 and y = 1, by using an identity fir
(i) (4y2 – 9x) (16y4 + 36x²y2 + 81x4)
2
х
4
x2
+ 1
4
(iii)
(ii)
2

Answer 1

Answer:

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