Question

x square + 4x + 5 = 0. by factorisation method only​

Answer 1

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${x}^{2} + 4x + 5 = 0$

${5x}^{2} + 5 = 0$

${5x}^{2} = 0 - 5$

${5x}^{2} = - 5$

${x}^{2} = \frac{ - 5}{5}$

${x}^{2} = - 1$

$x = \sqrt{ - 1}$

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