Question

factorise 7 root 2 x Square-10 x -4 root 2

Answer 1

$7 \sqrt{2} {x}^{2} - 10x - 4 \sqrt{2} \\ \\ = 7 \sqrt{2} {x}^{2} - 14x + 4x - 4 \sqrt{2} \\ \\ = 7 \sqrt{2} x(x - \sqrt{2} ) + 4(x - \sqrt{2} ) \\ \\ = (x - \sqrt{2} )(7 \sqrt{2} x + 4)$