If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2x^2=80
We move all terms to the left:
-2x^2-(80)=0
a = -2; b = 0; c = -80;
Δ = b2-4ac
Δ = 02-4·(-2)·(-80)
Δ = -640
Delta is less than zero, so there is no solution for the equation
| 2y+5=5y+10 | | 4|4x−3|−8=−4 | | 36+3=11d | | 20=5/10y | | -x+7=-4x-30 | | (1+60/100)(1+p/100)=2 | | 2(6^2x)-74(6^x)+72=0 | | 5−-v=-7 | | 5(w-3)=5w+20 | | y11+5=−18 | | -3y-2=-1 | | Y=500(1.025)x | | 2(x+5)-8=2 | | 2(2x-5)=-22+2x | | 15(t-3)+3t=6(3t+5)-8 | | t+t–3=4 | | 3(p+3)=6(1-p)+3 | | -4y-2(-5y+3)=2+6(2-y) | | 3+5m=7(-2m-5) | | 4p-30=-38 | | 0.3x-0.9(x-6)=0.2(x-1) | | 15+13k−9=6+13k | | 3+5m=7(-2m-5 | | 3x^2+16=76 | | (x)(200)=180 | | 1,2(1+t)=1.68 | | 4.5+10m=7.72 | | 168/13=x | | 740=12+8d/13 | | 345623456424564=6875754(m-13246575)-8378297388898988 | | -5c=-5c+3 | | 4x-7=-13+6x |