8x^2=42+16x

Simple and best practice solution for 8x^2=42+16x 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 8x^2=42+16x equation:


Simplifying
8x2 = 42 + 16x

Solving
8x2 = 42 + 16x

Solving for variable 'x'.

Reorder the terms:
-42 + -16x + 8x2 = 42 + 16x + -42 + -16x

Reorder the terms:
-42 + -16x + 8x2 = 42 + -42 + 16x + -16x

Combine like terms: 42 + -42 = 0
-42 + -16x + 8x2 = 0 + 16x + -16x
-42 + -16x + 8x2 = 16x + -16x

Combine like terms: 16x + -16x = 0
-42 + -16x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-21 + -8x + 4x2) = 0

Factor a trinomial.
2((-3 + -2x)(7 + -2x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-3 + -2x)' equal to zero and attempt to solve: Simplifying -3 + -2x = 0 Solving -3 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -2x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -2x = 0 + 3 -2x = 0 + 3 Combine like terms: 0 + 3 = 3 -2x = 3 Divide each side by '-2'. x = -1.5 Simplifying x = -1.5

Subproblem 2

Set the factor '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5

Solution

x = {-1.5, 3.5}

See similar equations:

| f(x)=5x^3-18x^2-8x | | 5x^4+7x^3+4x^2-3x-4=0 | | 4+2b=6a | | 4b-5a=13 | | 4(2)-8=4k | | 2x+4-6x-8+x= | | 0=1.25x^4-6x^2+2 | | 4(11)+5k=44 | | 49n^2x+4sinx+1=0 | | 4j-9=4k | | 4j+5k=44 | | 3t-v=9 | | 5t-3=3v | | 3x^4-12x^2-135=0 | | 4(19m+13)= | | 6(2)-2t=16 | | 5.9/10 | | (76-59)+40=x | | -4/3(y)=-8 | | x^3-x^2-34x-20=0 | | X^4-6x^3+15x^2-22x+22=0 | | 19.807/2.9 | | 1280.00/6400.00 | | 3x*11=6*5x+2 | | F(-2)=-8x+5 | | 1t+1n= | | 5t+3n=19 | | 23x-9x=14x | | -12=z*3 | | 6(2c-10)-90=0 | | 3[(7-3)^5/8] | | 2x^2+12x-10x-60=0 |

Equations solver categories