(x+5)*4+x*x=16

Simple and best practice solution for (x+5)*4+x*x=16 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (x+5)*4+x*x=16 equation: 



(x+5)*4+x*x=16

We move all terms to the left:

(x+5)*4+x*x-(16)=0

We multiply parentheses

4x+x*x+20-16=0

Wy multiply elements

x^2+4x+20-16=0

We add all the numbers together, and all the variables

x^2+4x+4=0

a = 1; b = 4; c = +4;
Δ = b2-4ac
Δ = 42-4·1·4
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-4}{2}=-2$

See similar equations:

| (x+5)*4+x*x=4 | | 5(x+4)-8=12 | | (x+5)*4-x*x=1 | | 15.75z-9=54 | | 4+2(x-2)=9 | | 2/3(1/3x+4)=1/9(3/4x-2) | | 650/x=325/1 | | 0.5y-22/5=1/2y-2.4 | | 4(37-4=3(r+9+2 | | -40=20-5v | | 2(x+9)+2(x-10)+90=180° | | 2(x+9)+2(x+10)+90=180 | | 550=100+75n | | 18=11x-37 | | 7=10b-23 | | 300=40+9(2x)^5 | | 300=40+9(2x)5 | | 86=10y+6 | | 15x-1=6x-8 | | 25x+33=20x+53 | | 1000/x=350/5 | | (3x+10)=(5x-30) | | 4x-21=7x= | | 2(40-5y)=10y+(1-y) | | Y=2z+6 | | 100x/100-x=121.2 | | (1,5)m=2 | | 2x^2+24x=24 | | 6x+1+75=6x+2 | | 3x-2×+3=5-2x | | 17=v-6 | | (3x-5)/2=14 |

Equations solver categories