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Factor.\newline2s2+9s+72s^2 + 9s + 7

Full solution

Q. Factor.\newline2s2+9s+72s^2 + 9s + 7
  1. Identify coefficients: Identify the coefficients aa, bb, and cc in the quadratic expression 2s2+9s+72s^2 + 9s + 7 by comparing it to the standard form ax2+bx+cax^2 + bx + c.a=2a = 2, b=9b = 9, c=7c = 7.
  2. Find two numbers: Find two numbers that multiply to aca*c (27=142*7 = 14) and add up to bb (99).\newlineThe numbers that satisfy these conditions are 22 and 77 because 27=142*7 = 14 and 2+7=92+7 = 9.
  3. Rewrite middle term: Rewrite the middle term 9s9s using the two numbers found in the previous step.2s2+9s+72s^2 + 9s + 7 can be rewritten as 2s2+2s+7s+72s^2 + 2s + 7s + 7.
  4. Factor by grouping: Factor by grouping. Group the first two terms together and the last two terms together. 2s2+2s2s^2 + 2s + 7s+77s + 7.
  5. Factor out common factor: Factor out the greatest common factor from each group. 2s(s+1)+7(s+1)2s(s + 1) + 7(s + 1).
  6. Final factored form: Since both groups contain the common factor (s+1)(s + 1), factor this out.(2s+7)(s+1)(2s + 7)(s + 1) is the factored form of the quadratic expression.