If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x^2-9x=-7
We move all terms to the left:
2x^2-9x-(-7)=0
We add all the numbers together, and all the variables
2x^2-9x+7=0
a = 2; b = -9; c = +7;
Δ = b2-4ac
Δ = -92-4·2·7
Δ = 25
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{25}=5$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-9)-5}{2*2}=\frac{4}{4} =1 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-9)+5}{2*2}=\frac{14}{4} =3+1/2 $
| a-3.7=-3.3 | | 2^2x+4^x=1 | | 5y^2+5y+65=0 | | 4m-2m-2(5m+8)=8 | | 5(y+5)^2=60 | | (2x)*x=30 | | -10w+2=-48 | | d-82=12 | | 5=1+((2x^2)/4) | | (v-2)^2+4=44 | | 6w+1=-35 | | 4m^2-10m+5=0 | | 3(x-7)+2x=5(x+5)-46 | | 20=1+2(x^2) | | w+2.7-2.7=2.2-2.7 | | 1=5-3a | | -x-8=2 | | 20=1+2x | | 5/4=76/89=f | | -2π+d=3π | | 345=88-77v | | -2y+3=5y+10 | | 2x+x+(x-12)=180 | | -3(r-2)=8-5(6+2r) | | 134536789-435675867=345376879-245346978=h | | -2x+9-13=-6 | | 123456374586978=213454667o67 | | 18=3-2w | | 336453797890=o76585756567 | | 5x^2+100x+470=0 | | w+2.7=2.2 | | 67i=456789 |