Perform the indicated operations. Write the resulting polynomial in standard form.(x2 + 1) - (6x2 - 9) + (x2 + x - 2)

A. -4x2 - 8x - 1
B. -5x2 + x + 8
C. -4x2 + x + 8
D. -6x2 + x + 8

Answer: C

Mathematics

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Evaluate the integral using the given substitution. dx , u = x3/2 - 10

A. sin3 (x3/2 - 10) + C
B.   sin (x3/2 - 10) + C
C. (x3/2 - 10) +  sin 2(x3/2 - 10) + C
D. x3/2 - 10 +  sin 2(x3/2 - 10)+ C

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Find the value of ? in the interval [0°, 360°) that satisfies the given conditions.tan ? =  and ? in quadrant III

A. 120° B. 240° C. 150° D. 210°

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Simplify the exponential expression.(4x7)-2

A.
B. 16x14
C.
D.

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Simplify, where possible.8x - y - 5(5x - 6y + 6z)

A. -17x + 29y - 30z B. -17x - 31y + 30z C. -17x + 5y - 6z D. -17x - 7y + 6z

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