If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8x^2+7x=9
We move all terms to the left:
8x^2+7x-(9)=0
a = 8; b = 7; c = -9;
Δ = b2-4ac
Δ = 72-4·8·(-9)
Δ = 337
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{337}}{2*8}=\frac{-7-\sqrt{337}}{16} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{337}}{2*8}=\frac{-7+\sqrt{337}}{16} $
| Z=11-i | | 3x=(5x-38) | | 30=(x-8)*(x-12) | | 9(x+8)=189 | | 2r/5+1=7 | | f÷3=42 | | 7x–10=81 | | 9q-20=49+35 | | | | x^2+85=-14x | | Y=7.36x-14,354.33 | | 4(x+6)+3=59 | | -1.8=y/4.5-2.4 | | x^2-3x=7x-30 | | 7(x+3)=119 | | 5(2)^x=5(1/2)^x | | 7x+1+6-x-7=18 | | 12x+1=10x-46 | | 10x=2.5x | | 7x-4x+7+3=46 | | -33+6b=36-3b | | b5=9 | | 16+1/2r=-11 | | −7y=77 | | -8r-9=-23 | | c2/5=8 | | 2x+5=5+2x+1 | | 25x-15x-100000=x | | x8−12=−72 | | 17-6v=5+12-6v | | -10b-5=1-10b | | -6-10f=-10f-6 |