Q. Fully simplify the expression below and write your answer as a single fraction.x2+4x+3x2+5x⋅6x2+24x−304x2−4Answer:
Factorize fractions: Factor the numerator and denominator of both fractions where possible.The first fraction is (x2+5x)/(x2+4x+3). We can factor the numerator by taking out the common factor x, and the denominator can be factored as a sum of squares.x(x+5)/((x+1)(x+3))The second fraction is (4x2−4)/(6x2+24x−30). We can factor out the common factor 4 in the numerator and factor the denominator.4(x2−1)/(6(x2+4x−5))Now, notice that x2−1 is a difference of squares and can be factored further.4((x+1)(x−1))/(6(x2+4x−5))
Factorize second fraction: Factor the denominator of the second fraction.We need to factor 6(x2+4x−5). To do this, we look for two numbers that multiply to −30 (6×−5) and add to 4. These numbers are 6 and −5.So, the factored form of the denominator is:6((x+6)(x−5))Now we can rewrite the second fraction as:6(x+6)(x−5)4((x+1)(x−1))
Multiply fractions: Combine the two fractions by multiplying them.(x+1)(x+3)x(x+5) * 6(x+6)(x−5)4((x+1)(x−1))To multiply fractions, we multiply the numerators together and the denominators together.((x+1)(x+3))∗(6(x+6)(x−5))x(x+5)∗4((x+1)(x−1))
Cancel common factors: Cancel out common factors.We can cancel out the (x+1) term that appears in both a numerator and a denominator.(x+3)⋅(6(x+6)(x−5))x(x+5)⋅4(x−1)
Simplify expression: Simplify the expression.Now we multiply out the remaining terms.(4x2+20x)×(4(x−1))/((x+3)×(6(x+6)(x−5)))We can distribute the 4 in the numerator:(16x2−16x)/((x+3)×(6(x+6)(x−5)))
Multiply denominator terms: Simplify the expression further.We can now multiply the terms in the denominator:(16x2−16x)/(6(x2+6x−5x−30))Simplify the terms in the denominator:(16x2−16x)/(6(x2+x−30))
Reduce common factors: Simplify the expression by reducing common factors.We can divide both the numerator and the denominator by 2:3(x2+x−30)8x2−8x
Check for further simplification: Check if the expression can be simplified further.The numerator and denominator do not have any common factors left, and the denominator cannot be factored in a way that would cancel out with the numerator. Therefore, the expression is fully simplified.
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