If it's not what You are looking for type in the equation solver your own equation and let us solve it.
=Y2+13Y+42
We move all terms to the left:
-(Y2+13Y+42)=0
We add all the numbers together, and all the variables
-(+Y^2+13Y+42)=0
We get rid of parentheses
-Y^2-13Y-42=0
We add all the numbers together, and all the variables
-1Y^2-13Y-42=0
a = -1; b = -13; c = -42;
Δ = b2-4ac
Δ = -132-4·(-1)·(-42)
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$Y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$Y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1}=1$$Y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-13)-1}{2*-1}=\frac{12}{-2} =-6 $$Y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+1}{2*-1}=\frac{14}{-2} =-7 $
| X=20y=25 | | -1-11x=-10x^2-8x | | X=9y=-20 | | X=-8,y=-15 | | 5-2(x+2)-15x=18 | | -4(2x-5)+6=34 | | 5+2(6x-2)=13 | | (52-0.5x)/5=(32-0.5x) | | -(-9x-5)=85 | | -(6x-3)=21 | | -3/5=-2x | | -3(7x+2)=15 | | 0=-2y^2-4y+1 | | -3(-4x-5)=39 | | 5(-2x+3)=115 | | 2X2–7x+3=0 | | y+1.56=6.51 | | X+X-1+x-2+x-3+x-4+x-5+x-6=70 | | X+X-1+x-2+x-3+x-4+x-5+x-6+x-7=70 | | X-1+x-2+x-3+x-4+x-5+x-6=70 | | X-1+x-2+x-3+x-4+x-5+x-6+x-7=70 | | 2v^2+8v+54=-6 | | F(n)=n/6|2n+3 | | 7/2t−2=4+4t | | 5×x÷3=20 | | 5×x=20 | | 2x*3.14=90 | | 2(x+8)=-3(4x-7)+4x | | 2x+(x-250000/x^2)=0 | | 7x+5-2(-4x-3)=3(x-1) | | 16x+2=18x-4 | | s=7s+11=12+7s |