Q72: Find all numbers for which the rational
Q73: Simplify.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8306/.jpg" alt="Simplify. - A)
Q74: Add or subtract. Then simplify. If a
Q75: Find the LCM by factoring.<br>-21, 28<br>A)28<br>B)49<br>C)588<br>D)84
Q76: Find the LCM by factoring.<br>-12, 7<br>A)19<br>B)42<br>C)12<br>D)84
Q78: Add. Find the LCD first.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8306/.jpg" alt="Add.
Q79: Add or subtract. Then simplify. If a
Q80: Multiply and simplify.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8306/.jpg" alt="Multiply and simplify.
Q81: Find the domain. Write interval notation for
Q82: Multiply and simplify.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8306/.jpg" alt="Multiply and simplify.