3(X2+7) , 2s(S-4), (W+7)(W+3)

3(x2+7)

2s(s-4)

(w+7)(w+3)

 

Answer:

1. \\ 3( {x}^{2} + 7) \\ = {3x}^{2} + 21 \\ 2. \\ 2s(s - 4) \\ = {2s}^{2} - 8s \\ 3. \\ (w + 7)(w + 3) \\ = {w}^{2} + 7w + 3w + 21 \\ = {w}^{2} + 10w + 21 \\


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