2x^4-8x^3-42x^2=0

Simple and best practice solution for 2x^4-8x^3-42x^2=0 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 2x^4-8x^3-42x^2=0 equation:


Simplifying
2x4 + -8x3 + -42x2 = 0

Reorder the terms:
-42x2 + -8x3 + 2x4 = 0

Solving
-42x2 + -8x3 + 2x4 = 0

Solving for variable 'x'.

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

Factor a trinomial.
2x2((-3 + -1x)(7 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 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 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 3

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 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 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Solution

x = {0, -3, 7}

See similar equations:

| -3x-18=-7x+2 | | 189=-9(-3n-6) | | 4+f=5 | | (x+3)-2x+8=28 | | 3x+1+4x+4=180 | | 3+6n=3(8n-5) | | 3x-2=-1/2 | | 4r-20= | | -4x-5(3x+10)=126 | | -9c-9c-12= | | 6/-4=-6 | | A(n)=-6-6(n-1) | | 6x^5-96x= | | -9x-5x= | | -4+3x=18 | | -12-(5y-9)= | | -2a+40+8a=5a-9a | | (2x+y)(x-y)=45 | | -4k-6=50 | | 8x+4=8x-3 | | Y+382=743 | | 21/j=3 | | 3x+10=4x+16 | | 4x^2-210x+2450=1000 | | -493=61+15y | | n-150=322 | | 7(n-2)=42 | | 21/10a=21/10 | | 1=0.4x-0.6x-7 | | 15a^2-22ab+8b^2= | | 56+6= | | 0.3v=0.36 |

Equations solver categories