Question

MATHEMATICS
6. Using identities, evaluate.
(1)
(ii) 992
(m) 1022
(V) 5.22
(vi) 297 x 303
(vii) 78 X 82
(ix) 1.05 x 9.5
7. Using a--b= (a + b)(a - b), find
(1) 512 - 492 (i) (1.02)– (0.98)2 (m) 1532 – 1472
(iv) 12.12 – 7.92
Using (x + a) (x + b) = x2 + (a + b) x + ab, find​

Answer 1

Explanation:

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