If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x*3x=84
We move all terms to the left:
x*3x-(84)=0
Wy multiply elements
3x^2-84=0
a = 3; b = 0; c = -84;
Δ = b2-4ac
Δ = 02-4·3·(-84)
Δ = 1008
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1008}=\sqrt{144*7}=\sqrt{144}*\sqrt{7}=12\sqrt{7}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12\sqrt{7}}{2*3}=\frac{0-12\sqrt{7}}{6} =-\frac{12\sqrt{7}}{6} =-2\sqrt{7} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12\sqrt{7}}{2*3}=\frac{0+12\sqrt{7}}{6} =\frac{12\sqrt{7}}{6} =2\sqrt{7} $
| 2m/5+3=5 | | 3^(2x-1)-4/3^x=5/3 | | 2x-4=6-3x, | | 5x²-16x+13=0 | | 2b+7=b+10 | | x+5/4x+3/4x=2400 | | -9+(x)/(4)=-7 | | 32x-64=24x | | 2x2-13x+36=0 | | 5xX=225 | | 2,4x+2,9x=77,60 | | 6x^2-12x-15=0 | | 3y+-44=2.6 | | 9(8-z)+(2z-7)=0 | | 3y-5=y+17 | | X+0.03x=9000 | | 2(x+4)=2(-8-4)-2x | | (3x-7)+(2x-3)=0 | | 12t-2=5t-36 | | 2×b+8=21 | | 4^(x+1)-5(2^x)+1=0 | | 3=2x+9x | | X=5x+8 | | v-(-15)=33 | | 3x-2=7=9 | | -12/5=x/5 | | 3y-20=7 | | 108.09=c^2 | | y2+13y+36=0 | | Y²+13y+36=0 | | 5a+29=11a-11 | | 31.77=c^2 |