4x-x^2=45

Simple and best practice solution for 4x-x^2=45 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 4x-x^2=45 equation:


Simplifying
4x + -1x2 = 45

Solving
4x + -1x2 = 45

Solving for variable 'x'.

Reorder the terms:
-45 + 4x + -1x2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + 4x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
45 + -4x + x2 = 0

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + -4x + -45 + x2 = 0 + -45

Reorder the terms:
45 + -45 + -4x + x2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + -4x + x2 = 0 + -45
-4x + x2 = 0 + -45

Combine like terms: 0 + -45 = -45
-4x + x2 = -45

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -45 + 4

Reorder the terms:
4 + -4x + x2 = -45 + 4

Combine like terms: -45 + 4 = -41
4 + -4x + x2 = -41

Factor a perfect square on the left side:
(x + -2)(x + -2) = -41

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 10=2+6w | | -6=-2x-6 | | -10x+21=4x+7 | | 21=5n-2-7 | | Y+12wheny=28 | | X-10=7.3 | | (-1+2i)(2+5i)= | | 2x(13+4x)=6x-2(8x-3) | | 1.5=x-12/2.5 | | X^12-4= | | (X*0.15)+(Y*0.20)=1.75 | | 2b/3=18 | | (X*0.15)+(X*0.20)=1.75 | | X+5=11.2 | | A+2=5x | | (A*0.15)+(A*0.20)=1.75 | | -1/2(14x-22) | | -12x+8= | | Log(7x)+log(2x)=log(150) | | 9m+3=3 | | K-2t=z | | 4+7n=4+7n | | X+5=7.4 | | X(40-2x)+x(40-2)+x(60-2x)+x(60-2x)+x(60-2x)= | | 1/9x=3-x/3*81x | | a*a+16=0 | | K+t=1 | | (x^2)dy=(4x^2+7xy+2y^2)dx | | 2*4x^-3=16x/8x^-1 | | 2(x+4)=12x-42 | | 4(5-2x)=4x | | 2(x+3)-4=5-2x |

Equations solver categories