Add or subtract as indicated. If terms are not like radicals and cannot be combined, so state. Assume all variables represent nonnegative real numbers.
- 
A. 12
B. -6
C. -42
D. -6
Answer: B
Mathematics
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Add the polynomials. Express your answer in standard form.(13mn4 + 4m2n2 + n4) + (4m2n2 - 8n4 - 6mn4)
A. 19mn4 + 8m2n2 + 7n4 B. 7mn4 + 8m2n2 - 9n4 C. 19mn4 - 8m2n2 - 7n4 D. 7mn4 + 8m2n2 - 7n4
Mathematics
Find the limit. 
f(x), where f(x) = 
A. ? B. 1 C. -? D. 0
Mathematics
Without graphing, determine whether the graph of the quadratic function opens up or opens down. Also, determine of the graph will be wider or narrower than the graph of y = x2.f(x) = - 
x2 + 5x - 6
A. up, narrower B. down, narrower C. up, wider D. down, wider
Mathematics
Find the sum.
A. 44 B. 84 C. 36 D. 100
Mathematics