If it's not what You are looking for type in the equation solver your own equation and let us solve it.
15x+30=x2
We move all terms to the left:
15x+30-(x2)=0
We add all the numbers together, and all the variables
-1x^2+15x+30=0
a = -1; b = 15; c = +30;
Δ = b2-4ac
Δ = 152-4·(-1)·30
Δ = 345
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{-(15)-\sqrt{345}}{2*-1}=\frac{-15-\sqrt{345}}{-2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+\sqrt{345}}{2*-1}=\frac{-15+\sqrt{345}}{-2} $
| (n-2)×180=168n | | (X-2)×180=168x | | a/3+4=8 | | (2x-1)=(5x+7) | | 11/4n=23=10 | | 6.9+9n-3.5=0 | | 10=k-4-6k+18 | | x−0.4x=80 | | G(x)=5x+9 | | 3(30+s)=4(s+14) | | 40-4p=-20+8p | | (9-5)+3*2=a | | 6-4x=-2x/3-4 | | (x+46)=90+30 | | 12/11*9/12=x | | 8(2p–4)–3p=20 | | -1.2=0.5p–3.45 | | –8(t+79)=96 | | 12x-5=8/10 | | 4+2i√3=0 | | t-39.2=t-216 | | (5x-8)=67+99 | | 3.2(1+0.5x))=-8 | | (3x+42)=46+44 | | (-3+x)=35+50 | | 21-x÷2=x÷5 | | 21=k/7 | | (2x-13)=105+134 | | ((3x-21)/6)-((2x+2)/6)=((-18)/6) | | h=(8/7)(28)+9.5 | | (x+46)=30 | | ((3x-21)/6)-((2x+2)/6)=-3 |