Question

factorise 4x^2+5√2x-3​

Answer 1

4x² +5√2 x -3 =0

⇒4x² +6√2 x -√2 x -3 =0

⇒2√2x(√2x+3) -1(√2x+3) =0

⇒(√2x+3)(2√2x -1) =0

⇒(√2 x+3) = 0 or (2√2x -1) =0

⇒x = -3/√2 or 1/2√2

or x = = (3√2)/2 and (√2)/4