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Factor completely:

16c^(4)-42c^(2)b^(3)-49b^(6)
Answer:

Factor completely:\newline16c442c2b349b6 16 c^{4}-42 c^{2} b^{3}-49 b^{6} \newlineAnswer:

Full solution

Q. Factor completely:\newline16c442c2b349b6 16 c^{4}-42 c^{2} b^{3}-49 b^{6} \newlineAnswer:
  1. Identify Structure: Identify the structure of the polynomial and look for a common factoring strategy. The polynomial is a quadratic in terms of c2c^2, which suggests trying to factor it as if it were a quadratic equation.
  2. Recognize Form: Recognize that the polynomial is in the form of a quadratic trinomial ax2+bx+cax^2 + bx + c. Here, we can consider c2c^2 as our variable xx. So, we have a=16a = 16, b=42b3b = -42b^3, and c=49b6c = -49b^6.
  3. Find Multiplying Numbers: Look for two numbers that multiply to acac (1649b616 * -49b^6) and add to bb (42b3-42b^3). The numbers that satisfy this are 28b3-28b^3 and 14b3-14b^3 because (28b3)(14b3)=392b6(-28b^3)(-14b^3) = 392b^6 and 28b314b3=42b3-28b^3 - 14b^3 = -42b^3.
  4. Rewrite Middle Term: Rewrite the middle term of the polynomial using the two numbers found in the previous step: 16c428b3c214b3c249b616c^4 - 28b^3c^2 - 14b^3c^2 - 49b^6.
  5. Factor by Grouping: Factor by grouping. Group the first two terms and the last two terms: 16c428b3c216c^4 - 28b^3c^2 - 14b3c2+49b614b^3c^2 + 49b^6.
  6. Factor Out Common Factors: Factor out the greatest common factor from each group. From the first group, we can factor out 4c24c^2, and from the second group, we can factor out 7b37b^3: 4c2(4c27b3)7b3(2c2+7b3)4c^2(4c^2 - 7b^3) - 7b^3(2c^2 + 7b^3).
  7. Recognize Common Factor: Notice that there is a common factor of (4c27b3)(4c^2 - 7b^3) that can be factored out: (4c27b3)(4c27b3)(4c^2 - 7b^3)(4c^2 - 7b^3).
  8. Recognize Perfect Square: Recognize that (4c27b3)(4c27b3)(4c^2 - 7b^3)(4c^2 - 7b^3) is a perfect square and can be written as (4c27b3)2(4c^2 - 7b^3)^2.

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