Question

Solve by Completing the Square. 2x^2 + 9x + 4 = 0

x=-2 and x=-4

x=2 and x=9

x=-1/2 and x=-4

Answer 1

@Allison @Ultrilliam @JustSaiyan

Answer 2

2x^2 -9x + 4 = 0
x^2 -(9/2)x = -2
x^2 -(9/2)x + (9/4)^2 = -2 + (9/4)^2
(x-(9/4))^2 = -32/16 + 81/16
(x-(9/4))^2 = 49/16
x-(9/4) = +-7/4
x = +(7/4)+(9/4) or x = -(7/4)+(9/4)
x = *-1/2*

4 x^2 + x = 0
x^2 + (1/4)x = 0
x^2 + (1/4)x + (1/8)^2 = (1/8)^2
(x+(1/8))^2 = (1/8)^2
(x + (1/8)) = +-(1/8)
x = (1/8)-(1/8) or x = -(1/8)-(1/8)
x = *-1/4*

So I'm pretty sure it's C

Answer 3

Thank youuuuu <3

Answer 4

np