Question

11 X square + 18 x + 7 factorise​

Answer 1

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Answer 2

Answer:

$11x {}^{2} + 18x + 7 = 0\\ 11x {}^{2} + 11x + 7x + 7 = 0 \\ 11x(x + 1) + 7(x + 1) = 0 \\ (x + 1)(11x + 7) = 0 \\ x = - 1 \: and \: \: \frac{ - 7}{11}$

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