Q. Simplify the expression completely if possible.5x2−40xx2−13x+40Answer:
Identify Terms to Factor: Identify the terms in the numerator and the denominator that can be factored. The numerator x2−13x+40 is a quadratic expression that can be factored into two binomials. The denominator 5x2−40x can be factored by taking out the common factor of 5x.
Factor Numerator: Factor the numerator x2−13x+40. To factor the quadratic expression, we look for two numbers that multiply to 40 and add up to −13. These numbers are −8 and −5. So, x2−13x+40=(x−8)(x−5).
Factor Denominator: Factor the denominator 5x2−40x. We can factor out the common term 5x, giving us 5x(x−8). So, 5x2−40x=5x(x−8).
Divide Factored Terms: Divide the factored numerator by the factored denominator.We have (x−8)(x−5)/5x(x−8).We can cancel out the common factor of (x−8) from the numerator and the denominator.
Write Simplified Expression: Write the simplified expression.After canceling out the common factor, we are left with (x−5)/5x.This is the simplified form of the original expression.
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