Problem 39 of 7
Factor polynomial by treating it as quadratic in form: y^(2/3)-4y^(1/3)-21.
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substitute a repeated sub-expression.
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Substitute repeated sub-expression and factor the resulting quadratic.
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Correct
Your answer is equivalent to the expected form.
Solution
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1. Identify repeated unit u.
2. Rewrite expression as quadratic in u.
3. Factor and substitute original expression back.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Treating x^4 and x^2 as unrelated powers when quadratic-in-form structure exists.