Question 3: Performing the calculation \(4 x-5+(x-1)(x+1)\) we get
\(4 x-5+(x-1)(x+1)=4 x-5+\left(x^{2}-1\right)=4 x-5+x^{2}-4= x^{2}+4 x-6 \)
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Question 3: Performing the calculation \(4 x-5+(x-1)(x+1)\) we get
\(4 x-5+(x-1)(x+1)=4 x-5+\left(x^{2}-1\right)=4 x-5+x^{2}-4= x^{2}+4 x-6 \)
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