If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4x(2x-5)=5x+4
We move all terms to the left:
4x(2x-5)-(5x+4)=0
We multiply parentheses
8x^2-20x-(5x+4)=0
We get rid of parentheses
8x^2-20x-5x-4=0
We add all the numbers together, and all the variables
8x^2-25x-4=0
a = 8; b = -25; c = -4;
Δ = b2-4ac
Δ = -252-4·8·(-4)
Δ = 753
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-25)-\sqrt{753}}{2*8}=\frac{25-\sqrt{753}}{16} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-25)+\sqrt{753}}{2*8}=\frac{25+\sqrt{753}}{16} $
| 0.77/20=x | | 72=17y-8y | | 3.2=3y-1.6 | | 732.00=48(x+2.25) | | 8(x+4)=8(8-3x) | | 0=2=4x+1 | | 10.6+w/4=-2.2 | | 1+1=l | | 13=6r+5-4 | | g(7)=5(7)+14 | | 12000=s/(1+0.12*7/12) | | x+9000000000=999999999999999999999999999999 | | 4=7y+3 | | 4x-⅔=2x+⅓ | | -15n+10=-13n-4 | | 3x+33=3x+13 | | -5x+12+10x=8x+12-3x | | 14j-(3j-2)-(5j+2-(j-1))=0 | | -5.24=5+x/8 | | -r+8r=0 | | 12000=s/(1+.12*7/12) | | 4x⅔=2x+⅓ | | 1-2n=5 | | -14x+10+2x=3x+3-15x | | 10-7b=4-10b-45+3b | | 6(x+8)+5=10x-4(x-5) | | 8x-6+6x-1+7x-11=180 | | x=5/6+2 | | -3+4p=-311 | | 4x-32/5=16 | | 3(7+4/7x)=279/7 | | w/7+(-2)=9 |