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Factor completely:

r^(8)-5r^(4)u^(3)-14u^(6)
Answer:

Factor completely:\newliner85r4u314u6 r^{8}-5 r^{4} u^{3}-14 u^{6} \newlineAnswer:

Full solution

Q. Factor completely:\newliner85r4u314u6 r^{8}-5 r^{4} u^{3}-14 u^{6} \newlineAnswer:
  1. Identify Common Factor: Identify the common factor in the polynomial.\newlineThe polynomial r85r4u314u6r^{8}-5r^{4}u^{3}-14u^{6} has a common factor of r4r^{4} in the first two terms, but not in the third term. However, we can look for a different type of factorization, which is factoring by grouping or looking for a pattern that resembles a known factorable form.
  2. Recognize Quadratic Form: Recognize the polynomial as a quadratic in form. The polynomial can be seen as a quadratic in terms of r4r^{4}, where r4r^{4} is the variable and u3u^{3} is a constant. The polynomial then takes the form of (r4)25r4u314u6(r^{4})^2 - 5r^{4}u^{3} - 14u^{6}, which resembles a quadratic equation ax2+bx+cax^2 + bx + c.
  3. Factor as Quadratic: Factor the polynomial as if it were a quadratic.\newlineWe will use the factoring technique for quadratics to factor the polynomial. We need to find two numbers that multiply to give 14u6-14u^{6} (the constant term) and add to give 5u3-5u^{3} (the coefficient of the middle term). These two numbers are 7u3-7u^{3} and 2u3-2u^{3}.
  4. Write as Binomials: Write the polynomial as a product of two binomials.\newlineThe polynomial can now be written as (r47u3)(r4+2u3)(r^{4} - 7u^{3})(r^{4} + 2u^{3}). This is the factorization of the polynomial into two binomials.
  5. Check Factorization: Check the factorization by expanding the binomials.\newlineTo ensure that the factorization is correct, we can multiply the two binomials to see if we get the original polynomial:\newline(r47u3)(r4+2u3)=r8+2r4u37r4u314u6=r85r4u314u6(r^{4} - 7u^{3})(r^{4} + 2u^{3}) = r^{8} + 2r^{4}u^{3} - 7r^{4}u^{3} - 14u^{6} = r^{8} - 5r^{4}u^{3} - 14u^{6}.\newlineThe expanded form matches the original polynomial, confirming that the factorization is correct.

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