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)=7x+19
We move all terms to the left:
4x(2x+5)-(7x+19)=0
We multiply parentheses
8x^2+20x-(7x+19)=0
We get rid of parentheses
8x^2+20x-7x-19=0
We add all the numbers together, and all the variables
8x^2+13x-19=0
a = 8; b = 13; c = -19;
Δ = b2-4ac
Δ = 132-4·8·(-19)
Δ = 777
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{-(13)-\sqrt{777}}{2*8}=\frac{-13-\sqrt{777}}{16} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(13)+\sqrt{777}}{2*8}=\frac{-13+\sqrt{777}}{16} $
| d/7+41=50 | | 18.436=7.5b+3.2-4.22b | | -1/2(3x-4=11 | | (5-x)/(3+x)=9 | | (5-x)(3+x)=9 | | -192=-6x+5(7x+8) | | 5x-7+2x=6x+6 | | -14-8x=6x+-14 | | 18^(x+2)=5^(3x) | | 3.1a+9+11.9a+7=0 | | (n+1)(n+2)=420 | | 4^2-6x=0 | | 8^2+6x+10x=0 | | 5r+4r=-9 | | x+4+4=3 | | -17-5z=9(6z-4) | | X+5=2y-1 | | m-5-5m=11 | | -14=3a+4a | | 21-x+11=180 | | 6=2k+5k | | 21-x+11+17=180 | | 21-x+11+17=90 | | 21-x+11=90 | | 21-x+11=17 | | 3y^2-2y+3=y^2+y-9 | | 8x-4x-2=5x-8 | | 6(2x+5)-2x=4x+6 | | n-97*2=n-23 | | z=2z-5 | | z=2z.5 | | -19+6(5w-17)=19+17w-w |