-7x-21=4x2

Simple and best practice solution for -7x-21=4x2 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 -7x-21=4x2 equation: 



-7x-21=4x^2

We move all terms to the left:

-7x-21-(4x^2)=0

determiningTheFunctionDomain
-4x^2-7x-21=0

a = -4; b = -7; c = -21;
Δ = b2-4ac
Δ = -72-4·(-4)·(-21)
Δ = -287
Delta is less than zero, so there is no solution for the equation

See similar equations:

| 5r=-9+8r | | 8-7t=-1-9t-9 | | (3f+1)+107=180 | | 3-1-2x=5-x-9 | | 3f+1=180 | | 3f+1=73 | | 151-4a=131-2a | | 9(2+a-12)=3a=6a+1 | | -d=-10-3D | | 6v=5v-6 | | -8.5(5x+2)=-20.5-9x | | (8e-5)+73=180 | | 9y+1+11y-23+14y-59=180 | | 12−3s=9 | | 3(7x+4)-2=21x+10 | | 6+2f=16 | | 6g+3=6+7g | | 0=-x^2-27 | | (-2x+6)/(x-2)=0 | | 10x+1.5=12.5x+1 | | (x+2)=43 | | 6x+830=5x+725 | | 16x+15=111x | | (-2x+6)/(x-2)=2 | | -x^2-27=O | | 9x+6-3x-15=33 | | 11=2/9x | | 1=-d+8 | | 10+10q=-10q-10 | | D=100t+4.9t^2 | | 9(2-3x)-29=8x-(x-23( | | 4x+5=3x-10 |

Equations solver categories