Identify a, b, c: Identify a, b, and c in the quadratic expression n2+7n+10.The quadratic expression is in the standard form ax2+bx+c, where a=1, b=7, and b0.
Find two numbers: Find two numbers that multiply to a∗c (which is 10) and add up to b (which is 7).We need to find two numbers that multiply to 10 and add up to 7. The numbers 2 and 5 satisfy these conditions because 2×5=10 and 2+5=7.
Write factored form: Write the factored form using the two numbers found in Step 2.The factored form of the quadratic expression is (n+2)(n+5), because these two binomials multiply to give the original quadratic expression.
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