Chapter 5: Problem 25
Write each number without exponents. $$ 7.5 \times 10^{5} $$
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Chapter 5: Problem 25
Write each number without exponents. $$ 7.5 \times 10^{5} $$
These are the key concepts you need to understand to accurately answer the question.
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The special product $$ (x+y)(x-y)=x^{2}-y^{2} $$ $$ \text { can be used to perform some multiplication problems. Here are two examples.} $$ $$ \begin{aligned} 51 \times 49 &=(50+1)(50-1) \\ &=50^{2}-1^{2} \\ &=2500-1^{2} \\ &=2499 \end{aligned} \quad | \begin{aligned} 102 \times 98 &=(100+2)(100-2) \\ &=100^{2}-2^{2} \\ &=10,000-4 \\ &=9996 \end{aligned} $$ Once these patterns are recognized, multiplications of this type can be done mentally. Use this method to calculate each product mentally. $$ 101 \times 99 $$
Find each product. \(-3 k\left(8 k^{2}-12 k+2\right)\)
Simplify by writing each expression wth positive exponents. Assume that all variables represent nonzero real numbers. $$ \frac{\left(3 p^{-2} q^{3}\right)^{2}\left(5 p^{-1} q^{-4}\right)^{-1}}{\left(p^{2} q^{-2}\right)^{-3}} $$
Find each product. \(-5 r(r+1)^{3}\)
Perform each indicated operation. Find the difference between the sum of \(5 x^{2}+2 x-3\) and \(x^{2}-8 x+2\) and the sum of \(7 x^{2}-3 x+6\) and \(-x^{2}+4 x-6\)
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