10.Simplify by using identities.
(1) (55)2
(ii) (15)2​

Question

10.Simplify by using identities.
(1) (55)2
(ii) (15)2​

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Rylee 3 months 2021-07-24T12:29:11+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-24T12:30:40+00:00

    Answer:

    1)3025

    2)225

    Step-by-step explanation:

    1)(a+b)^2=a^2+2ab+b^2

    (55)^2=(50+5)^2=50^2+2×50×5+5^2

    =3025.

    2)(a+b)^2=a^2+2ab+b^2

    (15)^2=(10+5)^2=10^2+2×10×5+5^2

    =225

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