Q. Perform the following operation and express in simplest form.3x2x2+4x−45÷5xx2+6x−27Answer:
Factor Expressions: First, we need to factor the numerators and denominators where possible to simplify the expression.Factor (x2+4x−45) and (x2+6x−27).(x2+4x−45) can be factored into (x+9)(x−5).(x2+6x−27) can be factored into (x+9)(x−3).
Rewrite with Factored Forms: Now, rewrite the original expression with the factored forms. 3x2(x+9)(x−5)÷5x(x+9)(x−3)
Take Reciprocal and Multiply: Recall that dividing by a fraction is the same as multiplying by its reciprocal. So, we will take the reciprocal of the second fraction and multiply.3x2(x+9)(x−5)×(x+9)(x−3)5x
Cancel Common Factors: Next, we can cancel out any common factors from the numerator and denominator. The (x+9) terms cancel out, and we can simplify the x terms by dividing 5x by 3x2, which leaves us with 3x5 in the numerator. 3x(x−5)×(x−3)5
Multiply Remaining Terms: Now, multiply the remaining terms. [(x−5)×5]/[3x×(x−3)]
Simplify Numerator Multiplication: Simplify the multiplication in the numerator. 3x(x−3)5x−25
Final Simplified Form: The expression is now simplified, and we cannot simplify it further because there are no more common factors to cancel out.The final simplified form is (5x−25)/[3x(x−3)].
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