If it's not what You are looking for type in the equation solver your own equation and let us solve it.
72x^2-13x+640=0
a = 72; b = -13; c = +640;
Δ = b2-4ac
Δ = -132-4·72·640
Δ = -184151
Delta is less than zero, so there is no solution for the equation
| 2x-15+59=180 | | 53-2x=59-5x | | -12h=252 | | 10+4b=6b-10 | | d-574=150 | | 8c-4-4c=-40 | | 4(3t−5)+7=8t+3 | | 10h=330 | | 2h=140 | | 9x-20+2x+36=180 | | (v+10)^2=121 | | 4x-3+123=180 | | -10-5r=-6r-1 | | 2v-49=-5(v+7) | | 4(v-4)=-5v+11 | | 90/100=x/65 | | (5r-5)+(8r+3)=180 | | 15x-8=128-3x | | 5v/7v=25 | | (7z+7)+(9z-7)=90° | | (7z+7)+(9z-7)=90 | | 5x-4(x-2)=8-(2-5x) | | (7z+7)+(9z-7)=180 | | 789=n—-90 | | 2(v-1)-6=-2(-6v+8)-4v | | -4(5v-6)+5v=3(v+6) | | 4(4v-4)=-5v+11 | | 6(x+5)=-4(4x-7)+6x | | 700-d=630 | | 9w=-612 | | -10-3x=13 | | 8+3(6-4x)=22-10x |