If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-k+-k(k+1)=2k
We move all terms to the left:
-k+-k(k+1)-(2k)=0
We add all the numbers together, and all the variables
-3k-k(k+1)=0
We multiply parentheses
-k^2-3k-k=0
We add all the numbers together, and all the variables
-1k^2-4k=0
a = -1; b = -4; c = 0;
Δ = b2-4ac
Δ = -42-4·(-1)·0
Δ = 16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$k_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$k_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{16}=4$$k_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-4}{2*-1}=\frac{0}{-2} =0 $$k_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+4}{2*-1}=\frac{8}{-2} =-4 $
| -6x²+300x+30000=0 | | -k+98(k+1)=2k | | y=ײ-6×+5 | | -k+13(k+1)=2k | | -k+-2(k+1)=2k | | -k+33(k+1)=2k | | -k+12(k+1)=2k | | -15+21=5b=-19 | | -k+9(k+1)=2k | | -k+1(k+1)=2k | | –8=2(s+8)+–6 | | 2(1.08)^x=2.5 | | 2.5=(1.08^x)+2 | | 6(x-8)=x=7(x-8)+8 | | 1.73(y-2)+2.28=9.2 | | 6/5-x=x/15-10/3 | | 4{2x+7}=16. | | 9t+3+4t-5=180 | | 13•x=200 | | -2(h-6)=-4 | | 5(2c-2.5)=2(c+11) | | 5(8-2.5x4)=30 | | 2(3.50x)=16 | | 2x(3.50)=16 | | 2.5/35=2/a | | 2n=14+n/4 | | x(2x-30)=(x+10) | | 3.651483716+y=40 | | 3(2+2)=z+3/4 | | -2(1+5x)=94 | | 110=12y10y | | 2(x+8)-14=13+29 |