If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
117-(4*x) < 0
117-(4*x) < 0
117-(4*x) < 0
117-4*x < 0
117-4*x < 0 // - 117
-4*x < -117 // : -4
x > -117/(-4)
x > 117/4
x in (-oo:117/4>
x = (117-(4*x))^(1/2) // - (117-(4*x))^(1/2)
x-(117-(4*x))^(1/2) = 0
x-(117-4*x)^(1/2) = 0
-(117-4*x)^(1/2) = x // - x
-(117-4*x)^(1/2) = -x // ^ 2
abs(117-4*x) = (-x)^2 // - (-x)^2
abs(117-4*x)-(-x)^2 = 0
x in (-oo:+oo)
abs(117-4*x)
117-4*x >= 0
117-4*x >= 0 // - 117
-4*x >= -117 // : -4
x <= -117/(-4)
x <= 117/4
x in (-oo:117/4>
117-(-x)^2-4*x = 0
x in (117/4:+oo)
-(-x)^2-(-4*x)-117 = 0
abs(117-4*x)-(-x)^2 = 0
/ | 117-(-x)^2-4*x = 0 i x in (-oo:117/4> | -(-x)^2-(-4*x)-117 = 0 i x in (117/4:+oo)
x in (-oo:117/4>
117-(-x)^2-4*x = 0
117-x^2-4*x = 0
DELTA = (-4)^2-(-1*4*117)
DELTA = 484
DELTA > 0
x = (484^(1/2)+4)/(-1*2) or x = (4-484^(1/2))/(-1*2)
x = -13 or x = 9
x in (117/4:+oo)
-(-x)^2-(-4*x)-117 = 0
4*x-x^2-117 = 0
DELTA = 4^2-(-117*(-1)*4)
DELTA = -452
DELTA < 0
x in { -13, 9 }
| -128=-2+7(3n+6) | | 8+w=11.49 | | 3/4x+22=28 | | 6x+14=-4 | | 5-2(X-1)=2X-7 | | 7/15x-8/73/2-1/4x | | 7+6x-4x=13 | | 7(9-1)=45 | | 100x=72 | | 2y^2+10y+8=0 | | -26x=48 | | 4x+x+3x+10=34 | | 3x+6x+9x+12=294 | | -3+p=-2(1-p)-2p | | .5(4d+6)+5=10 | | x-.13x= | | 30=6x+2x-10 | | 8x+5+3x=40 | | 2x+14y=108 | | 3/4x-7/63/2-1/4x | | 18-4x=-5(4x+3)-5(-4-3x) | | S=2*3.14R*2+2 | | b+4=-5b-14 | | -6(1-9k)= | | 3h+6h+20x=92 | | 7+2x+6x=103 | | AB=13+2x | | X-10+x+14= | | -3x-16=-3-2(-x-1) | | 7-7(x+4)+6x=5+5 | | 13-3t=7 | | 143cm=m |