Math, asked by niceprasad49, 9 months ago

Solve 12x^2+9x=81 using formula

Answers

Answered by k047

${12x}^{2} + 9x - 81 = 0$

$3{ {4x}^{2} + 3x - 27} = 0$

${4x}^{2} + 3x - 27 = 0$

$p = 108 \: and \: s = 3$

${4x}^{2} + 12x - 9x - 27 = 0$

$4x( x + 3) - 9(x + 3)$

$(x + 3)(4x - 9)$

$x = - 3 \: and \: \frac{9}{4}$

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