If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4z^2-16z+25=0
a = 4; b = -16; c = +25;
Δ = b2-4ac
Δ = -162-4·4·25
Δ = -144
Delta is less than zero, so there is no solution for the equation
| 8=3z+5 | | 12-3(-2x-8)=4x+1 | | 5(3^x-6)=10 | | 6x-(4x-2)=4 | | -7y-10=-3 | | 9x/81-90=108 | | 3r+-14r+13r+12r=-19 | | 6+3x-2=10 | | 3r+-14r–-13r–-5r+12r=-19 | | -(4x-5)+6x=-7(-4+2x)-7x | | 6x-3x-4x-1x=2-4-6-6 | | 2y^2=3y+2 | | -29+14p+-9p=9 | | c/7−2=4 | | 2x+12-x=90 | | -1(4x-5)+6x=-7(-4+2x)-7x | | 2/3x+4=1/2 | | -2p–-14p+-9p=9 | | 33=x^2+4x | | 2x-(3x-4)-(x+5)-8=19 | | 6-2=z+2-2 | | 5=g/8 | | 3(-3/7)=y | | 2/5x=1/9 | | 0.55x+0.05(18-x)=0.10(19) | | 10+20p=720 | | 5/8x+1/3x=46 | | 5+18x=23 | | 32x-8x=7x+2 | | x+(4/9)=(3/4) | | 8x-3=1+5x | | 3n+50=-11 |