4+9x2=-12x

Simple and best practice solution for 4+9x2=-12x equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 4+9x2=-12x equation: 



4+9x^2=-12x

We move all terms to the left:

4+9x^2-(-12x)=0

We get rid of parentheses

9x^2+12x+4=0

a = 9; b = 12; c = +4;
Δ = b2-4ac
Δ = 122-4·9·4
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-12}{18}=-2/3$

See similar equations:

| (9.3-x)(6.75-x)2=114 | | 6a-69=3a | | 4t+21=7t-3 | | 3b+16=4b | | 16x-33=5x | | 15v-1=5v+19 | | 12x+3x-10=-4x+37 | | 17s-8=15s-6 | | 13(5x-4)-6(7x-8)=-2(5x-6)+3(11x-4) | | 3a-20=2a+30 | | 18u-16=2u+16 | | 6v+62=v+77 | | 9(2x-13)-4(5x-3)=3(5x-10)-4(10+3x) | | t+5=6t | | 2x-1=1x-8 | | 3(b+1)=2b+5 | | 2*(-10)=12x+40 | | y=3*(-5)+5 | | t+15=26 | | (5x-60)+(3x-80)+(2x+40)=180 | | (5x-60)+(3x-80)+(2x+40)=1800 | | -9*18^-4x+4=-57 | | -4x^2-3x^2+2x^2-x^2=0 | | -5x+7x-3x-2x=0 | | (2x+4)+x+(2x+4)+x=7x | | 3x^2-9x-1000=0 | | 9x+17=3x+35 | | (3x+14)=(6x+19) | | 4x+16+5x-12=180 | | (5-3y)^2+y^2=25 | | 4x^2-5.5x+4.5=0 | | 5x+x=40+5 |

Equations solver categories