Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$(2 \times )(-7 \times )$$

Answer

$$-14*^2$$

Solution


Remove parentheses.
\[2\times -7\]
Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[-2{}^{2}\times 7\]
Simplify  \(2{}^{2}\times 7\)  to  \(14{}^{2}\).
\[-14{}^{2}\]
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