Solve the equation.|2x2 - x - 1|= 3

A. {, - }
B. {, }
C. {- , - }
D. no solution

Answer: B

Mathematics

Evaluate the double integral.

A. [15^5/2 - 14^5/2 ]
B. [15^5/2 - 14^5/2 - 1]
C. [15^5/2 - 1]
D. [15^5/2 - 14^5/2 - 1]

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Mathematics

Solve the problem.The sum of the squares of two numbers is 82. The difference of the two numbers is 8. Find the two numbers.

A. -9 and -1 B. -9 and -1; or 1 and 9 C. -1 and 9; or -9 and 1 D. 1 and 9

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Mathematics

Factor completely. If the polynomial cannot be factored, say it is prime.x3 + 24x2 + 144x

A. x(x + 12)(x - 12) B. x(x + 12)2 C. x(x - 12)2 D. prime

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Mathematics

Complete the sentence so the result is an identity. Let x be any real number. + tan2x = sec2x

A. cos2x B. sin2x C. 1 D. -1

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Mathematics