Question

1x^-8x-15=0 factorisation method
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Answer 1

Answer:

$x {}^{2} - 8x + 15 = 0 \\ = x {}^{2} - 5x - 3x + 15 = 0 \\ = x(x - 5) - 3(x - 5) = 0 \\ = (x - 5)(x - 3) = 0 \\ = x = 5 \: \: and \: \: 3$

Here is your solution.