Using identities, evaluate: (a) 71power2 (b 153power2 – 147power2 (c) 102power2 (d) 998power2 (e) 297 × 303 (f) 78 × 82 (g) 1

Question

Using identities, evaluate:
(a) 71power2 (b 153power2 – 147power2 (c) 102power2 (d) 998power2
(e) 297 × 303 (f) 78 × 82 (g) 1.05 × 9.5​

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Amaya 3 weeks 2021-11-15T08:50:33+00:00 1 Answer 0 views 0

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    2021-11-15T08:52:09+00:00

    Answer:

    71 x 71 = 504 1

    Step-by-step explanation:

    153^2=22500+900+9

    = 23409

    297X 303 = (300 – 3)(300+3)

    300^2-3^2

    = 90000 – 9=89991

    78 x 82 = (80-2) (80+2)

    = 80^2-2^2

    = 6400 – 4

    =6396

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