3x-10=x^2+20

Simple and best practice solution for 3x-10=x^2+20 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 3x-10=x^2+20 equation:


Simplifying
3x + -10 = x2 + 20

Reorder the terms:
-10 + 3x = x2 + 20

Reorder the terms:
-10 + 3x = 20 + x2

Solving
-10 + 3x = 20 + x2

Solving for variable 'x'.

Reorder the terms:
-10 + -20 + 3x + -1x2 = 20 + x2 + -20 + -1x2

Combine like terms: -10 + -20 = -30
-30 + 3x + -1x2 = 20 + x2 + -20 + -1x2

Reorder the terms:
-30 + 3x + -1x2 = 20 + -20 + x2 + -1x2

Combine like terms: 20 + -20 = 0
-30 + 3x + -1x2 = 0 + x2 + -1x2
-30 + 3x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-30 + 3x + -1x2 = 0

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

Divide each side by '-1'.
30 + -3x + x2 = 0

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + -3x + -30 + x2 = 0 + -30

Reorder the terms:
30 + -30 + -3x + x2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -3x + x2 = 0 + -30
-3x + x2 = 0 + -30

Combine like terms: 0 + -30 = -30
-3x + x2 = -30

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -30 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -30 + 2.25

Combine like terms: -30 + 2.25 = -27.75
2.25 + -3x + x2 = -27.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -27.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4(-4n-5)=-3-5(1+3n) | | 3(1-8x)-x=3(1+4x) | | 3x-2(x-3)=10 | | -5x-3(-x-17)=27 | | 3(1+n)-4(n+3)=-5 | | -2a-27=-5(4a-3)+4a | | 1013*12.5=202.6*v | | -15+h=-9 | | 10/2/5 | | -4(1+4a)+7(a+4)=3a-4a | | 5n^2-37n+42=0 | | -2/5(y+1/2)=-1/5(y-2) | | 31=-3(4x+5) | | 2500*6=p*1 | | 8(1+v)+v=4(2+3v) | | 17+9y=-3+16y | | X+1/2x+(x-46)+(x-35) | | 2x+7=16-5x | | 56n^2-192n-128=0 | | 4t+9y=-3+16y | | z-3.5z-3.4=-3(z+3.3) | | 324.16*2=101.3*v | | 16-(8m+7)=m-18 | | -2r+5(5-8r)=25+3r | | -3-6(-y-9)=6(6y+2)-5 | | 6-3(x+5)-12=-24 | | 27+4=7x+(-4) | | 36-7x=-8-(-6x+8) | | 1-2x=-(2x-1) | | 75*175=150*v | | 7x+24=-3x-2(-7x+2) | | 4/5*6/9 |

Equations solver categories