Question

factorise 4p^2-9
ans is (2p+3)^2​

Answer 1

Answer:

You already told the answer

Answer 2

4p^2 - 9 = (2p + 3 )^2

4p^2 - 9 = 4p^2 + 12p + 9

4p^2 - 9 - 4p^2 - 12p - 9 = 0  { [a+b]^2 = a^2 + b^2 + 2ab}

-12p -18 = 0

12p = -18

p = -18/12

p= -3

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