-7x^2-9=0

Simple and best practice solution for -7x^2-9=0 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^2-9=0 equation:


Simplifying
-7x2 + -9 = 0

Reorder the terms:
-9 + -7x2 = 0

Solving
-9 + -7x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + -7x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -7x2 = 0 + 9
-7x2 = 0 + 9

Combine like terms: 0 + 9 = 9
-7x2 = 9

Divide each side by '-7'.
x2 = -1.285714286

Simplifying
x2 = -1.285714286

Reorder the terms:
1.285714286 + x2 = -1.285714286 + 1.285714286

Combine like terms: -1.285714286 + 1.285714286 = 0.000000000
1.285714286 + x2 = 0.000000000

The solution to this equation could not be determined.

See similar equations:

| -20p+4=2(-10p+2) | | -3(5-5z)=-5(3-3z) | | -3.43+5b=16.84+5b-2.08 | | 18.7h+13.33=11.7h-16.77 | | 4r-5=13r+16 | | -4=2-x-x | | 8x+5y+4z-4x+2z-7y= | | 13-a+4a=4 | | 13-1+4a=4 | | 6*985= | | 7(m+8)= | | 160=-15t^2+105t+10 | | -1=150a | | 0=3x^3-4x | | (5x+1)*3=48 | | 40x+60y=420 | | 15x-30=6x | | 7x+2=12x^2+4x-8 | | 9x^4-40x^2+16=0 | | 7x+2=12x | | (x+2)2=y | | 5+2(5x-4)=7-5(2x+1) | | (2x-1)(4x+3)=7-22x | | ln(x+12)+ln(2)=2ln(x) | | 7+2(3x-4)=5-4(2x+1) | | (6-y)+(1+4y)=43 | | 16+(-24)+12= | | 4x^2=-20x | | 48a^2-8ab-8b^2=0 | | x(x-3)=7 | | x^2-9x+5=x^2-3x-4 | | 28x^2-22x=0 |

Equations solver categories