Identify Variables: Identify a, b, and c in the quadratic expression j2−13j+22. The quadratic expression is in the form of aj2+bj+c. For our expression, a=1, b=−13, and c=22.
Find Multiplying Numbers: Find two numbers that multiply to ac (which is a×c) and add up to b.Since a=1, ac=1×22=22. We need two numbers that multiply to 22 and add up to −13. The numbers that satisfy these conditions are −11 and −2 because (−11)×(−2)=22 and a×c0.
Write Factored Form: Write the factored form using the two numbers found in Step 2.The factored form of the quadratic expression is (j−11)(j−2).