Rewrite the middle term as the sum of two terms and then

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16. Rewrite the middle term as the sum of two terms and then factor by grouping.

     x2 – 2x – 63

17. Factor.     9x(x – 7y) – 6(x – 7y)

18. Factor completely.     print_coeff(a*c,1)x2 print_coeff(a*d,0)xy print_coeff(b*c,0)x print_coeff(b*d,0)y

19. Rewrite the middle term as the sum of two terms and then factor completely.

15x2 – 21x + 6

20. Rewrite the middle term as the sum of two terms and then factor completely.

     x2 + 19x + 90

21. Factor completely.     ax – ay + x2 – xy

22. Rewrite the middle term as the sum of two terms and then factor by grouping.

     x2 + 4x – 12

24. Rewrite the middle term as the sum of two terms and then factor by grouping.

     x2 – 14x + 45

25. Factor by grouping.     x3 – 3x2 + 4x – 12

Reference no: EM13531132

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