If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2+7x=8
We move all terms to the left:
x2+7x-(8)=0
We add all the numbers together, and all the variables
x^2+7x-8=0
a = 1; b = 7; c = -8;
Δ = b2-4ac
Δ = 72-4·1·(-8)
Δ = 81
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{81}=9$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-9}{2*1}=\frac{-16}{2} =-8 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+9}{2*1}=\frac{2}{2} =1 $
| 14v+6=2(5=7v)-4 | | 8(m+2)=3(m+3)-1 | | -d+12-3d=5d+6 | | x/4+7x/6=-85/12 | | 1=10(x-5) | | 9x-(4x+5)=7x-45 | | x^2+20x=8000 | | 5y-20=14y+17 | | -2+3(h-1)=16 | | x2-5=220 | | x-0.10x=18.90 | | 1/2x+4=2/3x+1/2 | | 2/5x⁵+6/5x⁴+14/15x²=0 | | 6x2+4x−5=0 | | 34=5x-11 | | 1/(x-5)=10 | | 2x2+11x+5=0 | | 2(y+1)−3(y−2)=5y+8−6y | | -1/3(p+5)+3/2(2p-3)=12 | | 1/{x-5}=10 | | 5x-4x+2=4x-4x-12 | | 3x-7/18=2x+5/12 | | 7+x-(3+32÷8)=3 | | 8/2=48/x | | 3x+6=5x-6=4x | | 3x+x=73 | | 6+{(5x-1)/3}=10 | | 0.6x-2.3=-1.1 | | X/x+3=8/7 | | (2x-7)(3x+2)(4x-3)=0 | | 0.2+0.2x=0.25x | | (12/x)+x-8=0 |