Question

Factorise ) 7 root2x^2-10x-4 root2 ii) x^2+ x/4 -1/8

Answer 1

You mean factorize : 7√2x² - 10x - 4√2 
= 7√2 x² - 14x + 4x - 4√2 
= (7√2x² - 14x) + (4x - 4√2) 
= 7√2x(x - √2) + 4(x - √2) 
= (x - √2)(7√2x + 4)