If it's not what You are looking for type in the equation solver your own equation and let us solve it.
19x^2-18x-18=10x^2-9
We move all terms to the left:
19x^2-18x-18-(10x^2-9)=0
We get rid of parentheses
19x^2-10x^2-18x+9-18=0
We add all the numbers together, and all the variables
9x^2-18x-9=0
a = 9; b = -18; c = -9;
Δ = b2-4ac
Δ = -182-4·9·(-9)
Δ = 648
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{648}=\sqrt{324*2}=\sqrt{324}*\sqrt{2}=18\sqrt{2}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-18)-18\sqrt{2}}{2*9}=\frac{18-18\sqrt{2}}{18} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-18)+18\sqrt{2}}{2*9}=\frac{18+18\sqrt{2}}{18} $
| 9-9c-10=-3-10c | | -4+w=-8 | | 4a-2=90 | | 2w+10=7w+5 | | 1.48-3.7u=-3.6-4.8u+5.19 | | 8x+9=24+9 | | c+256=14c | | 7-10d=7+9d | | 2+5n=100 | | -5-9-4j=10+4j | | d+9=12+ | | 9x=36x+5 | | 8+5v=-10+3v | | 5x+24=12x-11 | | 2+5=100n | | b/60=80/100 | | 50+6c-4=180 | | -10+5+6y=-9y+10 | | -7=0+m= | | 9y-10+10=-10+8y | | .17/8w=−111/4 | | $15x($0.75)=$13x($0.50) | | -8y-2=-8-9y | | f+-9=-3= | | 7y+4=4y+10 | | .65=100+(x+15) | | -2(1+7x)=-20 | | 2x+7+5x-23=360 | | 9y+1=10y+10 | | -4x-8=2x-15 | | 2^-9=2^3x-1 | | -4y=-6y-8 |