Question

х^2 - x - 72 find the zeroes please i will mark the best answer​

Answer 1

${x}^{2} - x - 72 \\ = > {x}^{2} - 9x + 8x - 72 \\ = > x(x - 9) + 8(x - 9) \\ = > (x - 9)(x + 8) \\ = > x = 9 \: \: and \: \: - 8$

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