If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x^2-14x-7=7
We move all terms to the left:
5x^2-14x-7-(7)=0
We add all the numbers together, and all the variables
5x^2-14x-14=0
a = 5; b = -14; c = -14;
Δ = b2-4ac
Δ = -142-4·5·(-14)
Δ = 476
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{476}=\sqrt{4*119}=\sqrt{4}*\sqrt{119}=2\sqrt{119}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-14)-2\sqrt{119}}{2*5}=\frac{14-2\sqrt{119}}{10} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-14)+2\sqrt{119}}{2*5}=\frac{14+2\sqrt{119}}{10} $
| -10x=3x-3 | | -7-2h=3 | | 2u+8=-12 | | 12=-16x2+16x+12 | | x+x+(x+12)+(3x-19)=117 | | -22.5=6n | | 28p2-33p-28=0 | | -9(6m-3)+6(1+4m)=62 | | 5.17=4n | | 6.5z-3=-42.5 | | 4-n=80 | | A+3=8b-1 | | 2/3x=5+1/3x | | X-10=13y | | a+a/2+3a/2-3a-180=180 | | 6.1(x-2)+x=5.17 | | 0.07x=210 | | Y=7.5x7 | | 13-2*x=5 | | 2x+1-47=180 | | 4a-12=3a+4 | | 56x=490 | | -14x-4=164 | | 6(0.5y)+2y=20 | | 8x^2+7x-4=160 | | x+8+4+7=180 | | 49=4-9x | | 12+9(w+20)=-3w | | 6+15p-15=17p+19 | | -4m+15=-9m-15 | | -4+16c=18c-4 | | X+10+50=x |