If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x^2+300=0
a = 5; b = 0; c = +300;
Δ = b2-4ac
Δ = 02-4·5·300
Δ = -6000
Delta is less than zero, so there is no solution for the equation
| 7/5n-6n=3 | | 20)m/0-1=-2 | | 14.5+4x=-6.5(3x-6) | | -6x-5(8x-18)=-2 | | 9d+5=32 | | 8x+7=135 | | 6x+12=4x18 | | 4(x-3)=3x-9 | | 6x+3(5x+13)=-3 | | (x^2+3x)^2-2(x^2+3x)-8=0 | | -6(9x+5)-3x=-408+x | | 5.9a-3.8=49.11 | | r-15.9=-2.6 | | 10+y=2y+3 | | -6x-3(-4)=18 | | y=4(45)+30 | | -9p+17=10 | | 6y-4=-40 | | b/5+12=14 | | 7(x-5)=x+3 | | -1/2f-15=-45 | | -3s+6=-15 | | 48+10x=96 | | -3q+2=-16 | | r/2+6=4 | | 1/4x-4=-10 | | 6+7y=4y+-3 | | -3.3=4.2+y/3 | | C(y)=4y2+10 | | 8+2a=7a-2 | | C(Y)=y2+4y+20 | | 5.9x+3.7=2.1 |