Simplify.
A. 
B. 
C. 
D. none of these
Answer: A
Mathematics
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Evaluate the integral.
A. 5 B. 0 C. -10 D. 10
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Add.-10 + (-38)
A. 48 B. -48 C. 28 D. -28
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Verify the identity.cos (x - y) - cos (x + y) = 2 sin x sin y
What will be an ideal response?
Mathematics
Solve the equation by completing the square.x2 + 4x - 7 = 0
A. {-2 - 1
, -2 + 1
}
B. {-1 - 
, -1 + 
}
C. {-2 - 
, -2 + 
}
D. {2 + 
}
Mathematics