Factor by grouping to obtain the difference of two squares.x4 - x2 - 18x - 81
A. (x2 + x + 9)(x2 - x - 9)
B. (x2 + x - 9)(x2 - x - 9)
C. (x2 + x + 9)(x2 - x + 9)
D. (x2 + x - 9)(x2 - x + 9)
Answer: A
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Find the gradient field F of the function f.f(x, y, z) = ex4 + y8 + z9
A. F = x4ex4 + y8 + z9i + y8ex4 + y8 + z9j + z9ex4 + y8 + z9k B. F = x3ex4 + y8 + z9i + y7ex4 + y8 + z9j + z8ex4 + y8 + z9k C. F = 4x3ex4i + 8y7ey8j + 9z8e z9k D. F = 4x3ex4 + y8 + z9i + 8y7ex4 + y8 + z9j + 9z8ex4 + y8 + z9k
Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 60,000 B. 0.06 C. 0.00001667 D. 0.0006
Use the properties of logarithms to evaluate the expression.log 10-12
A. log -12 B. -12 C. 12 D. 12 log 10
Solve the problem.What polynomial, when divided by 4ax6, yields -6ax6 - 4x3 + 8 as a quotient?
A. -24a2x12 - 16ax9 B. -24a2x12 - 16ax9 + 32ax6 C. -24ax6 - 16x3 + 32 D. -24a2x12 - 4x3 + 8