If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x*x-54x-225=0
We add all the numbers together, and all the variables
-54x+5x*x-225=0
Wy multiply elements
5x^2-54x-225=0
a = 5; b = -54; c = -225;
Δ = b2-4ac
Δ = -542-4·5·(-225)
Δ = 7416
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{7416}=\sqrt{36*206}=\sqrt{36}*\sqrt{206}=6\sqrt{206}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-54)-6\sqrt{206}}{2*5}=\frac{54-6\sqrt{206}}{10} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-54)+6\sqrt{206}}{2*5}=\frac{54+6\sqrt{206}}{10} $
| 8x+12x=1800 | | 3x+8-8x+5=-5x+13 | | 2a+7=4+3a | | 7a-4=9+a | | 17x^2-8x-48=0 | | x/5x=4200 | | x5x=4200 | | 5x*x+54x+225=0 | | 8x-74=5-8x | | 2*5^2-x=5+5^x | | 9^m+27-2m=28 | | 3x-5/4=x+3/2 | | 12x=1804x= | | 6x-15=5x+5 | | -2(3+4x)=-5x+6 | | 4-4x=9-12 | | 1-2h=8h | | 3t-2(6t-3)=42 | | 5y+16=0 | | -3(2q+1)=21 | | x/9=164 | | 2n/7=8 | | 1,4-0,8(x+2)+2,5(x-1)=10,9 | | 3(x+7)+2(9-x)=60+4(x-5) | | 6(x-4)+3(x-1)-5(x+2)+3(8-x)=-3-x | | 6*1/2x=3 | | 38+3x=10+5x | | 10=2(5-x)+5(3-x) | | 7-2(x+1)-3(x-2)=(4-3x)2-4 | | 6a+7=55-22a | | 6(1/2x+4)+5=50 | | D(40)=1x^2/320-3x/80 |