Question

find the roots of quadratic by factorisation
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Answer 1

Answer:

refer to the above attachment for the solution

Answer 2

$\sqrt{2} {x}^{2} + 7x + 5 \sqrt{2} = 0 \\ \sqrt{2} {x}^{2} + 2x + 5x + 5 \sqrt{2} = 0 \\ \sqrt{2} x(x + \sqrt{2} ) + 5(x + \sqrt{2} ) = 0 \\ (x + \sqrt{2} )( \sqrt{2} x + 5) = 0 \\ \\ x = - \sqrt{2} \: or \: \frac{ - 5}{ \sqrt{2} }$