Question 2: Doing the calculation \((7 x+1)^{2}-50 x^{2}\) we get
\((7 x+1)^{2}-50 x^{2}=49 x^{2}+14 x+1-50 x^{2}=-x^{2}+14 x+1 \)
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Question 2: Doing the calculation \((7 x+1)^{2}-50 x^{2}\) we get
\((7 x+1)^{2}-50 x^{2}=49 x^{2}+14 x+1-50 x^{2}=-x^{2}+14 x+1 \)
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