Solve the equation by factoring.81x2 - 126x + 49 = 0
A. {- 
}
B. {
}
C. {- 
}
D. {
}
Answer: D
Mathematics
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Solve the problem.Find (g?f)(3) when f(x) = 2x + 5 and g(x) = -1/x.
A. - 
B. 
C. - 
D. 
Mathematics
Use the given graph to find the x-intercepts and zeros of the function.
A. (-5, 0), (-1, 0); -5, -1 B. (5, 0), (1, 0); 5, 1 C. (-5, 0), (1, 0); -5, 1 D. (-1, 0), (5, 0); -1, 5
Mathematics
Find the difference quotient for the function and simplify it.f(x) = x2 - 3x
A. 2x + h B. 2xh + h - 3x C. 2x + h - 3 D. h - 3
Mathematics
Find the second-order partial derivative.Find fxy when f(x, y) = xy2 + yex2 + 5.
A. 2xex2 B. 2y + 2xex2 C. 2yex2 D. y + xex2
Mathematics