If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2-18=-x2
We move all terms to the left:
x2-18-(-x2)=0
We add all the numbers together, and all the variables
-(-1x^2)+x2-18=0
We add all the numbers together, and all the variables
x^2-(-1x^2)-18=0
We get rid of parentheses
x^2+1x^2-18=0
We add all the numbers together, and all the variables
2x^2-18=0
a = 2; b = 0; c = -18;
Δ = b2-4ac
Δ = 02-4·2·(-18)
Δ = 144
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{144}=12$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12}{2*2}=\frac{-12}{4} =-3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12}{2*2}=\frac{12}{4} =3 $
| /u=4.8 | | 51=-15x | | 5x+3/12=9x+4/25 | | 12=–6(4+r) | | 7a-2=6-3a | | 2x-3/5=x+5/6 | | -4,9x^2+3,34x+8,18=0 | | 2x-3=X10 | | 9(w-3)=-63 | | -n-8/9=1 | | 8=4(y+5)-8y | | 3(x+12)=0. | | 5+3•x=83 | | I4x+1I=3x | | -3(n+7)=-13=5n | | -33-n=-4(3+2n) | | 3b+20=8b-88 | | (7i)(-5i)=0 | | -v-7(v-5)=-7v-40 | | 0.7x=0.3x+0.24 | | 30-6n=-2(-7n-5) | | X³-4x+4=0 | | 1+2(-7+3b)=-5-2b | | -2h=-27 | | 33+2y-10=10y-13-2y | | 5r-7=2r+27 | | -15-15x=-4x | | 6-3b+9=5-b | | 5(x+2)+4=8x-1-3(3x-5) | | 16+3x-2x=-6x=x | | x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x+x=54 | | 1h+1h+20=1h+36 |