Recognize Structure: Recognize the structure of the expression. The given expression k4+10k2p4+21p8 resembles a quadratic in form, where k2 plays the role of 'x' and p4 plays the role of 'y'. So, we can think of this as factoring a quadratic trinomial of the form x2+bx+c.
Find Factors: Look for factors of the constant term that add up to the coefficient of the middle term.We need to find two numbers that multiply to 21p8 and add up to 10k2. The numbers that satisfy this are 3p4 and 7p4 because 3p4×7p4=21p8 and 3p4+7p4=10p4.
Write Trinomial: Write the expression as a quadratic trinomial and factor it.We can rewrite the expression as (k2+3p4)(k2+7p4) by grouping the terms that we found in the previous step.
Check Factored Form: Check the factored form by expanding it to ensure it matches the original expression.Expanding (k2+3p4)(k2+7p4), we get k4+3p4k2+7p4k2+21p8, which simplifies to k4+10k2p4+21p8, matching the original expression.
Write Final Answer: Write the final answer.The complete factorization of the expression k4+10k2p4+21p8 is (k2+3p4)(k2+7p4).
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