Question

2x² + 9x + 4 = 0
tentukan nilai x

Answer 1

2x^2 + x + 8x + 4 = 0
x(2x+1) + 4 (2x+1)=0
(x+4) + (2x+1) = 0

penyelesaiannya :
=> x + 4 = 0 => x = - 4
atau
=> 2x+1 = 0 => 2x = -1 => x = - 1/2