Factor and simplify the expression.tan4x - sec4x

A. sec2x + tan2x
B. sec2x
C. -2 tan2x - 1
D. tan2 - sec2x


Answer: C

Mathematics

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Simplify the radical expression.

A. 11 B. 5 C. ±5 D. 25

Mathematics

Provide an appropriate response.Explain the difference between saying "Subtract 3.9 from 7.5" and saying "3.9 minus 7.5."

What will be an ideal response?

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Identify the exponent and the base, and then simplify the expression.153

A. exponent: 15, base: 3, simplified: 45 B. exponent: 45, base: 3, simplified: 15 C. exponent: 3, base: 45, simplified: 3375 D. exponent: 3, base: 15, simplified: 3375

Mathematics

Solve the problem.The table lists how financial aid income cutoffs (in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the financial aid cutoff for 1985. 

A. $21,000 B. $18,000 C. $36,000 D. $57,000

Mathematics