factorise √2x^2 + 7x + 5√2
Answers
Answered by
28
√2 x² +7x +5 √2 = 0
⇒ √2 x² + 5x + 2x + 5√2 = 0
⇒ √2x² + 5x + √2*√2*x + 5√2=0
⇒ x(√2x + 5) + √2(√2x + 5) =0
⇒ (x+√2)(√2x+5) = 0
That gives x= - √2 or x= - 5/√2
Similar questions