Question

Solve the following quadratic equation by completing square. 4m^2 - 12m=-7​

Answer 1

Answer:

$\\ 4m ^{2} - 12m - 7 = 0 \\ 4m ^{2} + 2m - 14m - 7 = 0 \\ = 2m(2m + 1) - 7(2m + 1) = 0 \\ (2m + 1)(2m - 7) = 0 \\ m = - \frac{1}{2} \\ and \\ \: m = \frac{7}{2}$

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Answer 2

Hello Mate!!

4m^2 -12m-7=0

4m^2 -14m +2m -7 =0

2m(2m-7) + 1*(2m-7)=0

(2m-7)*(2m+1) = 0

m= (7/2) & m= -(1/2)

Here is the required answer.