Simplify the expression. Assume all variables represent positive real numbers.(
+ 4)(
- 4)
A. 2
B. 6 - 2
C. 22
D. -10
Answer: D
Mathematics
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Decide if the number is rational or irrational.-
A. Rational B. Irrational
Mathematics
Provide an appropriate response.Simplify: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the following quadratic equation using the quadratic formula. Find the exact answer. If there are no real solutions, so state.10x2 + 19x + 6 = 0
A. x = - 
or x = - 
B. x = - 
or x = - 
C. x = 
or x = 
D. x = 
or x = - 
Mathematics
Simplify. Assume that all radicands are nonnegative.
(
+ 
)
A. sin ? + 
B. cos ? 
C. sin ? (1 + 
)
D. 
+ 
Mathematics