Solve by completing the square : 2x^2= 9x+5

2 answers

2x^2= 9x+5
2x^2 - 9x = 5
x^2 - 9/2 x = 5/2
x^2 - 9/2 x + 81/16 = 5/2 + 81/16
(x-9/4)^2 = 121/16
x-9/4 = ±11/4
x = 9/4 ± 11/4
x = -1/2 , 5
How to solve by completely the square.
X^2+18x+10=0