write missing monomial to make an identity ( + 2a)^2 = + 12ab + 4

Question

write missing monomial to make an identity ( + 2a)^2 = + 12ab + 4

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Gia Bảo 7 months 2021-07-26T12:49:23+00:00 1 Answers 5 views 0

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    2021-07-26T12:50:38+00:00

    Answer:

    The missing monomial should be 3b.

    Step-by-step explanation:

    Given that,

    ( + 2a)^2 = + 12ab + 4

    Let the missing monomial is x.

    ( x+ 2a)^2 = x^2+ 12ab + 4a^2\\\\( x+ 2a)^2=(3b)^2+ 2(2a)(3b) + (2a)^2\\\\So,\\\\( 3b+ 2a)^2=(3b)^2+ 2(2a)(3b) + (2a)^2

    So, the missing monomial should be 3b.

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