Chapter 4: Problem 35
\(\left(\frac{6}{7}\right)^{-2}\)
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These are the key concepts you need to understand to accurately answer the question.
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Chapter 4: Problem 35
\(\left(\frac{6}{7}\right)^{-2}\)
These are the key concepts you need to understand to accurately answer the question.
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The special product \((x+y)(x-y)=x^{2}-y^{2}\) can be used to perform some multiplications.Example: $$\begin{array}{l|l}51 \times 49 & 102 \times 98 \\\=(50+1)(50-1) & =(100+2)(100-2) \\\=50^{2}-1^{2} & =100^{2}-2^{2} \\\=2500-1 & =10,000-4 \\\=2499 & =9996\end{array}$$ Use this method to calculate each product mentally. $$ 201 \times 199 $$
Find each product. Recall that \(a^{2}=a \cdot a\) and \(a^{3}=a^{2} \cdot a\). $$ (m-5)^{3} $$
Use scientific notation to calculate the result in each expression. Write answers in scientific notation. 74\. \(\frac{3.400,000,000(0.000075)}{0.00025}\)
Use scientific notation to calculate the result in each expression. Write answers in scientific notation. 75\. \(\frac{0.00000072(0.00023)}{0.000000018}\)
Find each product. Recall that \(a^{2}=a \cdot a\) and \(a^{3}=a^{2} \cdot a\). $$ -3 a(3 a+1)(a-4) $$
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