Question

Solve the quadratic equation 12x2 − 3x − 9 = 0 by factoring

Answer 1

\[\LARGE{12x^2-3x-9=0}\]\[\implies 12x^2-12x+9x-9=0\]

Answer 2

\[12x(x-1)+9(x-1)=0\]

Answer 3

\[(12x+9)(x-1)=0\]

Answer 4

\[12x+9=\frac{0}{x-1}=0\]

Answer 5

\[x=\frac{-9}{12}\]

Answer 6

& other x=1

Answer 7

got it???
:)

Answer 8

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