Q. Simplify the following expression completely.x2−2x−3x2−8x+15Answer:
Factorize numerator and denominator: Factor the numerator and the denominator.The numerator x2−8x+15 can be factored into (x−3)(x−5).The denominator x2−2x−3 can be factored into (x−3)(x+1).
Cancel common factors: Cancel out the common factors.The factor (x−3) is common to both the numerator and the denominator, so it can be canceled out.This leaves us with (x−5)/(x+1).
Check for further simplifications: Check for any further simplifications.There are no common factors left, and neither the numerator nor the denominator can be factored further.Therefore, the expression is fully simplified.
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