Question

x2-2√2x-30 factorise plz
​

Answer 1

I will give you the attachment please wait

Answer 2

Hello Friend.

Here is your answer below,,

$x {}^{2} - 2 \sqrt{2} x - 30 = 0 \\ = > x {}^{2} - 5 \sqrt{2} x + 3 \sqrt{2} x - 30 = 0 \\ = > x {}^{2} - x(5 \sqrt{2} - 3 \sqrt{2} ) - 30 = 0 \\ = > x {}^{2} - 5 \sqrt{2} x + 3 \sqrt{2} x - 30 = 0 \\ = > x(x - 5 \sqrt{2} ) + 3 \sqrt{2} (x - 5 \sqrt{2} ) = 0 \\ = > (x + 3 \sqrt{2} )(x - 5 \sqrt{2} ) = 0 \\ = > x + 3 \sqrt{2} = 0 \\ = > x = - 3 \sqrt{2} \\ or \\ = > x - 5 \sqrt{2} = 0 \\ = > x = 5 \sqrt{2} \\ \\ hence\\ \\ x = ( - 3 \sqrt{2} \: and \: 5 \sqrt{2} )$

I hope that helps you