If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2=n(n-8)
We move all terms to the left:
-2-(n(n-8))=0
We calculate terms in parentheses: -(n(n-8)), so:We get rid of parentheses
n(n-8)
We multiply parentheses
n^2-8n
Back to the equation:
-(n^2-8n)
-n^2+8n-2=0
We add all the numbers together, and all the variables
-1n^2+8n-2=0
a = -1; b = 8; c = -2;
Δ = b2-4ac
Δ = 82-4·(-1)·(-2)
Δ = 56
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{56}=\sqrt{4*14}=\sqrt{4}*\sqrt{14}=2\sqrt{14}$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8)-2\sqrt{14}}{2*-1}=\frac{-8-2\sqrt{14}}{-2} $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+2\sqrt{14}}{2*-1}=\frac{-8+2\sqrt{14}}{-2} $
| -7x-177=87+x | | X^2+3.5x-3.5=0 | | 8(-6+x)=4x-36 | | 7/2+2m/5=41/10 | | X^2+3.5x+7=0 | | 60+.45x=57.95x | | 3x2+9x+6=0 | | x-104+6x=78 | | 400000=250x-5x^2 | | 80-3t=5t+8 | | 5x+7=7•7x+7-2x | | x2+6x=16 | | 2+(12/p)=4p | | -3(x-6)=x-8 | | -48+7x=20+5x | | 4.7+10m=7.31 | | 2(p+3)=0 | | 275000=250x-5x^2 | | 0.15m+35=0.25m+30 | | 7•x=50+5x | | -(n+6)=26+3n | | -15-n=-7n=3(n-7) | | 5(3x-2)=7x-16 | | 7+7x=2x+12 | | 9*n/5=9/n/5 | | -5x+8x-9=3(x-3)-6 | | 275000=250x-5^2 | | 7xx=50+5x | | 34=-7(6c+8) | | 33=16y | | 4(4y-3)-(y-5)=52 | | x+6.5=14.8 |