If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(4x^2)+100=0
a = 4; b = 0; c = +100;
Δ = b2-4ac
Δ = 02-4·4·100
Δ = -1600
Delta is less than zero, so there is no solution for the equation
| 13m=1.5 | | 10x-4(×-2)=12×+7(×+3) | | 2(5x-1)=3(×+11) | | -6x2+45x-7777=0 | | s/2-(-14)=18 | | -7(h-3)=-49 | | 42=-x^2+x | | 5m2+10m+5=0 | | -7g-3=46 | | -2^2+4x+720=0 | | -38=-12x+10= | | (W+1)^2=2w^2-3w+7 | | 3x=321 | | 8n+11=99 | | 23.c-2=3c+14 | | -x^2-10x-30=0 | | -7(a+8)=-14 | | -2c+11=1 | | 7w+2=9 | | 15=33-3x | | 4t+-5=-17 | | 3(m+5)=-12 | | x+x-30+3x+10=180 | | -x^2+6x+475=0 | | 105=169-x | | -x+215=36 | | 238=26-w | | -v+14=176 | | 30n+150=40-20n | | 30(n-5)=40-20n | | y+y+y-30=180 | | 17-3x=44 |