Identify a, b, c: Identify a, b, and c in the quadratic expression 3g2+10g+7 by comparing it with the standard form ax2+bx+c.a=3b=10b0
Find two numbers: Find two numbers that multiply to a∗c (3∗7=21) and add up to b (10).The numbers that satisfy these conditions are 3 and 7 because 3∗7=21 and 3+7=10.
Rewrite middle term: Rewrite the middle term, 10g, using the two numbers found in the previous step.3g2+10g+7 can be rewritten as 3g2+3g+7g+7.
Factor by grouping: Factor by grouping. Group the first two terms and the last two terms.(3g2+3g)+(7g+7)Factor out the greatest common factor from each group.g(3g+3)+7(3g+3)
Notice common factor: Notice that (3g+3) is a common factor in both groups.Factor out (3g+3) from the expression.(3g+3)(g+7)
Check factored form: Check the factored form by expanding it to ensure it equals the original expression.(3g+3)(g+7)=3g2+21g+3g+21=3g2+24g+21This is not equal to the original expression, which means there is a math error.
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