Q. Simplify the expression completely if possible.x2−14x+49x2−11x+28Answer:
Identify Expressions: Identify the expressions in the numerator and the denominator and check if they can be factored.The numerator is a quadratic expression x2−11x+28, and the denominator is also a quadratic expression x2−14x+49.
Factor Numerator: Factor the numerator x2−11x+28. We are looking for two numbers that multiply to 28 and add up to −11. These numbers are −4 and −7. So, x2−11x+28 can be factored as (x−4)(x−7).
Factor Denominator: Factor the denominator x2−14x+49. We are looking for two numbers that multiply to 49 and add up to −14. These numbers are −7 and −7. So, x2−14x+49 can be factored as (x−7)(x−7) or (x−7)2.
Write Factored Form: Write the factored form of the original expression: (x−7)(x−7)(x−4)(x−7).
Cancel Common Factors: Cancel out the common factors in the numerator and the denominator. The (x−7) term is common to both and can be canceled out.After canceling, we are left with x−7x−4.
Check Further Simplifications: Check for any further simplifications. Since (x−4) and (x−7) are both linear and do not have any common factors, the expression cannot be simplified further.The final simplified expression is (x−4)/(x−7).
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