Algebra I

Example 1

Simplify.

1. a, b
2. 
3. 
4. If each variable is nonnegative (not a negative number),

If each variable could be positive or negative (deleting the restriction “If each variable is nonnegative”), then absolute value signs are placed around variables to odd powers.

• e
• If each variable is nonnegative,
• f
• If each variable is nonnegative,

If each variable could be positive or negative, then you would write

• g
• If each variable is nonnegative,

If each variable could be positive or negative, you would write

• h
• If each variable is nonnegative,

If each variable could be positive or negative, you would write

• i
• If each variable is nonnegative,
• j
• If each variable is nonnegative,