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Factor.\newline3g2+10g+73g^2 + 10g + 7

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Q. Factor.\newline3g2+10g+73g^2 + 10g + 7
  1. Identify aa, bb, cc: Identify aa, bb, and cc in the quadratic expression 3g2+10g+73g^2 + 10g + 7 by comparing it with the standard form ax2+bx+cax^2 + bx + c.\newlinea=3a = 3\newlineb=10b = 10\newlinebb00
  2. Find two numbers: Find two numbers that multiply to aca*c (37=213*7=21) and add up to bb (1010).\newlineThe numbers that satisfy these conditions are 33 and 77 because 37=213*7 = 21 and 3+7=103+7 = 10.
  3. Rewrite middle term: Rewrite the middle term, 10g10g, using the two numbers found in the previous step.\newline3g2+10g+73g^2 + 10g + 7 can be rewritten as 3g2+3g+7g+73g^2 + 3g + 7g + 7.
  4. Factor by grouping: Factor by grouping. Group the first two terms and the last two terms.\newline(3g2+3g)+(7g+7)(3g^2 + 3g) + (7g + 7)\newlineFactor out the greatest common factor from each group.\newlineg(3g+3)+7(3g+3)g(3g + 3) + 7(3g + 3)
  5. Notice common factor: Notice that (3g+3)(3g + 3) is a common factor in both groups.\newlineFactor out (3g+3)(3g + 3) from the expression.\newline(3g+3)(g+7)(3g + 3)(g + 7)
  6. Check factored form: Check the factored form by expanding it to ensure it equals the original expression.\newline(3g+3)(g+7)=3g2+21g+3g+21=3g2+24g+21(3g + 3)(g + 7) = 3g^2 + 21g + 3g + 21 = 3g^2 + 24g + 21\newlineThis is not equal to the original expression, which means there is a math error.