Q. Fully simplify the expression below and write your answer as a single fraction.x2+8x+15x4−25x2⋅6x3−36x2+30xx2+2x−3Answer:
Factor Numerator and Denominator: First, factor the numerator and the denominator of both fractions where possible.The numerator of the first fraction, x4−25x2, can be factored as a difference of squares: (x2−52)(x2)=(x2−25)(x2).The denominator of the first fraction, x2+8x+15, can be factored as (x+3)(x+5).The numerator of the second fraction, x2+2x−3, can be factored as (x+3)(x−1).The denominator of the second fraction, 6x3−36x2+30x, can be factored by first taking out the common factor of 6x: 6x(x2−6x+5), and then factoring the quadratic: 6x(x−5)(x−1).
Write Factored Expression: Now, write the expression with the factored terms: (x+3)(x+5)(x2−25)(x2)×6x(x−5)(x−1)(x+3)(x−1).
Cancel Common Factors: Next, cancel out the common factors from the numerator and the denominator across the two fractions.The (x+3) terms cancel out, as do the (x−1) terms. Also, x2 can be canceled with one of the x's in 6x.The expression now looks like this:(x+5)(x2−25)x×6(x−5)1.
Simplify Expression: Simplify the expression further by canceling out the (x−5) terms: 6(x+5)(x2−25)x.
Write Single Fraction: Finally, write the simplified expression as a single fraction: (x3−25x)/(6x+30).
Further Simplify Fraction: We can simplify the fraction further by factoring out an x from the numerator and a 6 from the denominator: 6(x+5)x(x2−25).
Final Answer: Now, we can see that the expression is fully simplified and cannot be reduced further.The final answer is:6(x+5)x(x2−25).
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