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Factor the expression completely.

70 x-40x^(4)
Answer:

Factor the expression completely.\newline70x40x4 70 x-40 x^{4} \newlineAnswer:

Full solution

Q. Factor the expression completely.\newline70x40x4 70 x-40 x^{4} \newlineAnswer:
  1. Identify GCF: Identify the greatest common factor (GCF) of the terms in the expression.\newlineThe terms are 70x70x and 40x440x^4. The GCF of the numerical coefficients (7070 and 4040) is 1010. Both terms also have an xx term, so the GCF is 10x10x.
  2. Factor out GCF: Factor out the GCF from the expression.\newlineWe can write the expression as 10x(74x3)10x(7 - 4x^3).
  3. Check for further factoring: Check if the remaining expression inside the parentheses can be factored further.\newlineThe expression inside the parentheses is 74x37 - 4x^3, which is a difference of two cubes since 77 is 232^3 and 4x34x^3 is (2x)3(2x)^3.
  4. Factor difference of cubes: Factor the difference of two cubes using the formula a3b3=(ab)(a2+ab+b2)a^3 - b^3 = (a - b)(a^2 + ab + b^2). Here, aa is 22 and bb is 2x2x, so we get (22x)(22+22x+(2x)2)(2 - 2x)(2^2 + 2\cdot2x + (2x)^2).
  5. Simplify factored form: Simplify the factored form of the difference of two cubes.\newlineWe get (22x)(4+4x+4x2)(2 - 2x)(4 + 4x + 4x^2).
  6. Combine with GCF: Combine the GCF factored out earlier with the factored form of the difference of two cubes.\newlineThe completely factored expression is 10x(22x)(4+4x+4x2)10x(2 - 2x)(4 + 4x + 4x^2).
  7. Check for further simplification: Check for any further simplification or common factors in the factored terms.\newlineThere are no further common factors, and the expression is fully simplified.

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