Chapter 1: Problem 27
Factor the polynomial. $$a^{6}-b^{8}$$
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Chapter 1: Problem 27
Factor the polynomial. $$a^{6}-b^{8}$$
These are the key concepts you need to understand to accurately answer the question.
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Replace the symbol \(\square\) with either \(=\) or \(\neq\) to make the resulting statement true, whenever the expression has meaning Give a reason for your answer. $$\left(a^{2}+1\right)^{1 / 2} \square a+1$$
Simplify the expression. $$\frac{\left(4 x^{2}+9\right)^{1 / 2}(2)-(2 x+3)\left(\frac{1}{2}\right)\left(4 x^{2}+9\right)^{-1 / 2}(8 x)}{\left[\left(4 x^{2}+9\right)^{1 / 2}\right]^{2}}$$
The table contains average annual temperatures for the northern and southern hemispheres at various latitudes. $$\begin{array}{|c|c|c|}\hline \text { Latitude } & \text { N. hem. } & \text { S. hem. } \\\\\hline 85^{\circ} & -8^{\circ} \mathrm{F} & -5^{\circ} \mathrm{F} \\\75^{\circ} & 13^{\circ} \mathrm{F} & 10^{\circ} \mathrm{F} \\\65^{\circ} & 30^{\circ} \mathrm{F} & 27^{\circ} \mathrm{F} \\\55^{\circ} & 41^{\circ} \mathrm{F} & 42^{\circ} \mathrm{F} \\\45^{\circ} & 57^{\circ} \mathrm{F} & 53^{\circ} \mathrm{F} \\\35^{\circ} & 68^{\circ} \mathrm{F} & 65^{\circ} \mathrm{F} \\\25^{\circ} & 78^{\circ} \mathrm{F} & 73^{\circ} \mathrm{F} \\\15^{\circ} & 80^{\circ} \mathrm{F} & 78^{\circ} \mathrm{F} \\\5^{\circ} & 79^{\circ} \mathrm{F} & 79^{\circ} \mathrm{F} \\\\\hline\end{array}$$ (a) Which of the following equations more accurately predicts the average annual temperature in the southern hemisphere at latitude \(L ?\) (1) \(T_{1}=-1.09 L+96.01\) (2) \(T_{2}=-0.011 L^{2}-0.126 L+81.45\) (b) Approximate the average annual temperature in the southern hemisphere at latitude \(50^{\circ} .\)
Verify the property. \(\bar{z}=z\) if and only if \(z\) is real.
Simplify the expression, and rationalize the denominator when appropriate. $$\sqrt[3]{3 t^{4} v^{2}} \sqrt[3]{-9 t^{-1} v^{4}}$$
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