If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x^2+16x+72.25=0
a = 1; b = 16; c = +72.25;
Δ = b2-4ac
Δ = 162-4·1·72.25
Δ = -33
Delta is less than zero, so there is no solution for the equation
| 5-3t=14 | | 2/3=3/c | | 4(x-3)=6-16x | | 18y−-2y+-10y+-11y−-15=7 | | (x/4)+(x/9)=10 | | 15y-20=110. | | 3^x=101 | | -(0.9568)^y=0 | | 13-3y=53 | | 1-(1-0.0432)^y=1 | | 5(2x-1)=2(x-5)-3 | | 4x-12+3x+15+20=180 | | x+(x+5)=19 | | 190=220-x | | 4x=8/x2-4 | | 15{y-4}-2{y-9}+5{y+6}=0 | | n2–24n–25=0 | | 2(x+1)=5–2x | | (2x-17)+(x+37)+x=180 | | (x-5)/5=(2x+1)/3-7 | | x-5/5=2x+1/3-7 | | 2x-10+2x+x=180 | | 2x+x+16+x=180 | | X+5+115+x=180 | | 3/4(d+2)=2/3d | | 3x+21=2x+5 | | x+40+20+x+x=180 | | X+40+x+20+x+x=180 | | 80+x+80+x=180 | | 90+20+x+x=180 | | X=6m | | z/10+5=6 |