If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2-7x-7=0
We add all the numbers together, and all the variables
x^2-7x-7=0
a = 1; b = -7; c = -7;
Δ = b2-4ac
Δ = -72-4·1·(-7)
Δ = 77
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{77}}{2*1}=\frac{7-\sqrt{77}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{77}}{2*1}=\frac{7+\sqrt{77}}{2} $
| -1/4*7+3r=-1/8r | | 4x-7x+17=44 | | -1-(k-8)=23+k | | -3(6-10v-5v)=0 | | 4x-9=-3(x+8)-27 | | 2/3(-3x+9)=-2 | | x/13=3/5.79 | | -16x^2+185=0 | | 15/7=30/k | | -3(6-10v-5v=0 | | P2-7p-7=0 | | -8-8(-4-2n)=0 | | 2(1x+5)=16 | | 3a-(3-(5a-11))=30 | | 9(x-6)+1=4x-3 | | 5x-2(x+2)=11-(2x+5) | | 15a-2*4a+5=-6a | | 4m-(3m-(m+1))+6m=9 | | 21x+25+675x-27/3=180 | | 15(x+7)-12=48 | | 2n+4+66=70 | | -3(2x-)=-6x+9 | | x^2+6x=-11/4 | | 6a+a=-11 | | N+n+4+66=70 | | 5x+(5x-(6-3x))=7 | | 3x-2(x+1)=2(x-1) | | 8x=2(x+1)=7x+8 | | 12-6r=-4(6r-3) | | 3x-2(x+1)+2=2(x-1) | | 3(x-1)^2=-27 | | -5m-13=12 |