If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9x^2-8x=7
We move all terms to the left:
9x^2-8x-(7)=0
a = 9; b = -8; c = -7;
Δ = b2-4ac
Δ = -82-4·9·(-7)
Δ = 316
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{316}=\sqrt{4*79}=\sqrt{4}*\sqrt{79}=2\sqrt{79}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-8)-2\sqrt{79}}{2*9}=\frac{8-2\sqrt{79}}{18} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-8)+2\sqrt{79}}{2*9}=\frac{8+2\sqrt{79}}{18} $
| 3x+24=50+7 | | X+21=9×x-11 | | 5.59(x+3.470)=56.79 | | 5w=3w+16 | | x−6+4=−8 | | 7x+5=2+0 | | X+x+30+40=180 | | 11x-3x+96=11x+36 | | 8x+9=8x+24 | | 3(x+10)+6=10+2 | | 15-5v=-(-2v+6) | | 1.6q-5.6-5.1q=-4.5-5.6 | | 3x(x+10)+6=10+2 | | 2=5p−74 | | 3(r+7)=-4r | | 6x-6+5x+4=180 | | 9+7x=153 | | -4(3-5a)=48 | | -21.4=-2.2+x/6 | | 2.2q-4.2-2.9q=-1.7q-5.7 | | -2(x-3)+4x=-(-x | | 12=z+6 | | 2x*2=7 | | 0.05(x-14)=0.05x-7 | | -13=d-6 | | 2z-13=3 | | 3.3q-4.5-3.9q=1.6q-4.7 | | w+8w=36 | | 0.75x-6.3=0.45-0.6x | | 2(7+r)=29 | | 4(c-16)=-32 | | 13-2x=9x-20 |