100x^4=400x^3+2100x^2

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Solution for 100x^4=400x^3+2100x^2 equation:


Simplifying
100x4 = 400x3 + 2100x2

Reorder the terms:
100x4 = 2100x2 + 400x3

Solving
100x4 = 2100x2 + 400x3

Solving for variable 'x'.

Reorder the terms:
-2100x2 + -400x3 + 100x4 = 2100x2 + 400x3 + -2100x2 + -400x3

Reorder the terms:
-2100x2 + -400x3 + 100x4 = 2100x2 + -2100x2 + 400x3 + -400x3

Combine like terms: 2100x2 + -2100x2 = 0
-2100x2 + -400x3 + 100x4 = 0 + 400x3 + -400x3
-2100x2 + -400x3 + 100x4 = 400x3 + -400x3

Combine like terms: 400x3 + -400x3 = 0
-2100x2 + -400x3 + 100x4 = 0

Factor out the Greatest Common Factor (GCF), '100x2'.
100x2(-21 + -4x + x2) = 0

Factor a trinomial.
100x2((-3 + -1x)(7 + -1x)) = 0

Ignore the factor 100.

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}

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