If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8x^2-18-24=0
We add all the numbers together, and all the variables
8x^2-42=0
a = 8; b = 0; c = -42;
Δ = b2-4ac
Δ = 02-4·8·(-42)
Δ = 1344
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1344}=\sqrt{64*21}=\sqrt{64}*\sqrt{21}=8\sqrt{21}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-8\sqrt{21}}{2*8}=\frac{0-8\sqrt{21}}{16} =-\frac{8\sqrt{21}}{16} =-\frac{\sqrt{21}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+8\sqrt{21}}{2*8}=\frac{0+8\sqrt{21}}{16} =\frac{8\sqrt{21}}{16} =\frac{\sqrt{21}}{2} $
| 72/3f=4 | | 76/3d=4 | | 2x^2=986 | | 0.30(480)+0.55x=0.40(x+480) | | -38=-3x-7 | | -9x+4=100 | | 200m-125m+48.500=51.250-175m | | y=-5(y+9)=-4(y+6)+7 | | m+7m=96 | | 9.38=3x+2.21 | | n/16=73 | | 5p+6p-77=0 | | 3x-5=-8x+28 | | 6x-4=+2 | | 4x/3=15+x/2 | | 11x+3=8x+12 | | 4(x+4)+3=15 | | 5x/4+4=24 | | 46-y=23 | | 5+6t=15-(2-4t) | | 13-(-22-4n)=8n-5 | | 5c+4(c-4)=-34 | | 4y+3(y-9)=15 | | 5(p-6)=-40 | | 156/3+y=72 | | 156/3+y=73 | | 9s=6s+12 | | 8r+3=4r-(3r+6) | | (-5p-1)+6=7p+3 | | 3n-(4n+6)=-5n+2 | | 4-3b=-3-(5+7b) | | 14+12w=-16-9w |