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2007-12-11 05:35:10 · 1 answers · asked by william5000forever 2 in Science & Mathematics Mathematics

1 answers

5(k-1)^2 - 3(k-1) + 7
=5(k^2 -2k+1)-3(k-1)+7
=5k^2 - 10k +5-3k+3+7
=5k^2 -13k + 15

2007-12-11 05:40:58 · answer #1 · answered by norman 7 · 0 0

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