Question

Factorise x square + 3 root2x + 4

Answer 1

${x}^{2} + 3 \sqrt{2} x + 4 = 0 \\ {x}^{2} + 2 \sqrt{2} x + \sqrt{2} x + 4 = 0 \\ x(x + 2 \sqrt{2} ) + \sqrt{2} (x + 2 \sqrt{2} ) = 0 \\ (x + 2 \sqrt{2} )(x + \sqrt{2} ) = 0$
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