If it's not what You are looking for type in the equation solver your own equation and let us solve it.
25x-(5-x)(5+x)=0
We add all the numbers together, and all the variables
25x-(-1x+5)(x+5)=0
We multiply parentheses ..
-(-1x^2-5x+5x+25)+25x=0
We get rid of parentheses
1x^2+5x-5x+25x-25=0
We add all the numbers together, and all the variables
x^2+25x-25=0
a = 1; b = 25; c = -25;
Δ = b2-4ac
Δ = 252-4·1·(-25)
Δ = 725
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{725}=\sqrt{25*29}=\sqrt{25}*\sqrt{29}=5\sqrt{29}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(25)-5\sqrt{29}}{2*1}=\frac{-25-5\sqrt{29}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(25)+5\sqrt{29}}{2*1}=\frac{-25+5\sqrt{29}}{2} $
| -3p+5(p+5)=-4p+7 | | 4*(-4)-((-1)^2-4)^2=a | | 22x=27.5 | | -24=4(t–7) | | 9d-7d+9=11 | | 11v=9v+16 | | x+2x+4x=450 | | -4n(n-2)=6(n+3)-11n | | 4(3x+8)-9=2x(6x-8)+39 | | 9d–7d+9=11 | | -27=t–16 | | 11=8(7+p)+11 | | -35=5(q-3)-15 | | N÷1/2-9=4n+5 | | 18/(-6)=a | | 23=2p=5 | | -8*(-3)=a | | -35=5(q–3)–15 | | -42=-6(4+q) | | -2(2+y)=-12 | | 3(x−2)=18 | | 3(y-6)-5=-3(-8y+5)-3y | | 10z-2z=-64 | | 12x+2=2x+12 | | 11+7y=-4y | | -7t-5t=-84 | | 12x-9+8x+14=180 | | 7x-3+4x=19 | | 9x+80=x-48 | | x+8+3x-4=x+13 | | 5x+4=1x | | -8.1=w/6+11.1 |