If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4r^2+2=0
a = 4; b = 0; c = +2;
Δ = b2-4ac
Δ = 02-4·4·2
Δ = -32
Delta is less than zero, so there is no solution for the equation
| -9+-2h=-15 | | -9+-2h=-15 | | -9+-2h=-15 | | 2c+43=50 | | 2c+43=50 | | 2c+43=50 | | 2c+43=50 | | 64+4x=29 | | 64+4x=29 | | -3b+11=8+9b | | (x+7)/(x+31)=3/7 | | -3b+11=8+9b | | (x+7)/(x+31)=3/7 | | (x+7)/(x+31)=3/7 | | -3b+11=8+9b | | -3b+11=8+9b | | 10d=8d-2 | | 10d=8d-2 | | 10=8d-2 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 5=3q−4 | | 8+hh=3.7 | | 64=4+10x | | 64=4+10g | | x-3/x+4=7 |