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    We need to factorise 4y^2 - 9 - Teachoo
    Davneet Singh's image
    Davneet Singh

    Hi Lakshmi

    We need to factorise 4y2 - 9

     

    Now,

    4y2 - 9

    = (2y)2 - 32

    Using a2 - b2 = (a - b) (a + b)

    = (2y - 3) (2y + 3)

    Written on Oct. 5, 2017, 5:31 p.m.

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