Question

x^2 -60x -2700
solve this by quadratic formula only please


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Answer 1

${x}^{2} - 60x - 2700 = 0 \\ = > {x}^{2} - 90x + 30x - 2700 = 0 \\ = > x(x - 90) + 30(x - 90) = 0 \\ so \: x + 30 = 0 \: or \: x - 90 = 0 \\ therefore \: x = - 30 \: or \: x = 90$

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