If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9n^2=8-7n
We move all terms to the left:
9n^2-(8-7n)=0
We add all the numbers together, and all the variables
9n^2-(-7n+8)=0
We get rid of parentheses
9n^2+7n-8=0
a = 9; b = 7; c = -8;
Δ = b2-4ac
Δ = 72-4·9·(-8)
Δ = 337
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}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{337}}{2*9}=\frac{-7-\sqrt{337}}{18} $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{337}}{2*9}=\frac{-7+\sqrt{337}}{18} $
| 20v-15v-1=19 | | 72x-3=147 | | -6n+29=-5(2n-2)-1 | | 3-2(x+9)=-15 | | -8k=-7k+11 | | 3(k+6)+-5=-8 | | 13=3(w+2)-2 | | 5x+4x=15 | | 6(6+r)=31+r | | X/9+8=3x | | 4x-5x+9=5x- | | -16.1t+4.47=-14.3t+7.19+6.1 | | q+9q-10=20 | | 5/9s-14=7/18s-16 | | -40-7x=-8(x+4) | | 72x-3=-40 | | F(-3)=x2+7 | | -10-5k=-7k+10 | | 11b^2+3b=-5 | | d^2-1=-50 | | 4(2+9p)= | | -2.72=3.56(s-16)-9.84 | | -8(35+40)=-16(1+17x)+11x | | 4x+3=3x+7=45 | | 8=-(x+1) | | 10/18s-14=7/18s-16 | | 7x=(-5x)+24 | | 45x+15=150 | | 6m-m+4=14 | | 19=7x-2x | | 25=3(w+8) | | 5x+2(3(x-4)+1)=-33 |