Identify Quadratic Expression: Identify the quadratic expression to be factored.The given quadratic expression is 2x2−3x−5. We need to find two binomials that multiply to give this expression.
Set Up Factoring Problem: Set up the factoring problem.To factor the quadratic expression, we look for two numbers that multiply to give the product of the coefficient of x2 (which is 2) and the constant term (which is −5), and add up to the coefficient of x (which is −3).
Find Two Numbers: Find the two numbers.The product of the coefficient of x2 and the constant term is 2×−5=−10. We need two numbers that multiply to −10 and add up to −3. The numbers that satisfy these conditions are −5 and 2 because (−5)×2=−10 and (−5)+2=−3.
Write Factored Form: Write the quadratic expression in its factored form.Using the numbers found in Step 3, we can write the quadratic expression as:2x2−5x+2x−5Now, we group the terms to factor by grouping:(2x2−5x)+(2x−5)
Factor Each Group: Factor each group separately.From the first group 2x2−5x, we can factor out an x:x(2x−5)From the second group 2x−5, we can factor out a 1:1(2x−5)Now we have:x(2x−5)+1(2x−5)
Factor Out Common Factor: Factor out the common binomial factor.The common binomial factor is (2x−5), so we factor this out from both groups:(2x−5)(x+1)
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