If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-7x^2=-147
We move all terms to the left:
-7x^2-(-147)=0
We add all the numbers together, and all the variables
-7x^2+147=0
a = -7; b = 0; c = +147;
Δ = b2-4ac
Δ = 02-4·(-7)·147
Δ = 4116
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{4116}=\sqrt{196*21}=\sqrt{196}*\sqrt{21}=14\sqrt{21}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-14\sqrt{21}}{2*-7}=\frac{0-14\sqrt{21}}{-14} =-\frac{14\sqrt{21}}{-14} =-\frac{\sqrt{21}}{-1} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+14\sqrt{21}}{2*-7}=\frac{0+14\sqrt{21}}{-14} =\frac{14\sqrt{21}}{-14} =\frac{\sqrt{21}}{-1} $
| 73-x=191 | | (x-10)2-6=10. | | 1=3x+6-4x | | 46=(5u+11) | | -1b+5=1 | | 27=y-9 | | -17x-1-10x+17=-32x+1 | | F(1)=-3x^2+2x+5 | | 4x+3+3x=-4 | | 1=0.17x+100 | | 2x2+2x-5=0. | | 1=0.17x=100 | | 6v=7−v | | 5x^2-40x=61 | | 4(3x-^)=72 | | -8z−4=-9z | | -3(4r-2)+9=-14r+15+2r | | -8−10d=-8d | | y=-6(-1)-3 | | -2=3x+5+2 | | y=-6(-5)-3 | | -4y=-5y−10 | | 10+0.2x=16 | | -5m=-4m+6 | | 2(1-6m)=98 | | -13+8r=-3(r-3) | | n=-9+10n | | 2(1+6k)=86 | | 16=5x+8 | | -3=x+5+5+3x | | 7j=8j+9 | | 8(7+8n)=312 |