Q. Simplify the following expression completely.x2+2x−63x2−15x+56Answer:
Factor Numerator: Factor the numerator x2−15x+56. To factor the quadratic expression, we need to find two numbers that multiply to 56 and add up to −15. These numbers are −7 and −8. So, x2−15x+56 can be factored as (x−7)(x−8).
Factor Denominator: Factor the denominator x2+2x−63. Similarly, we need to find two numbers that multiply to −63 and add up to 2. These numbers are 9 and −7. So, x2+2x−63 can be factored as (x+9)(x−7).
Simplify Expression: Simplify the expression by canceling out the common factors.We have (x−7)(x−8) in the numerator and (x+9)(x−7) in the denominator. The common factor (x−7) can be canceled out from both the numerator and the denominator.The simplified expression is x+9x−8.