Multiply.(7a + 10c)(7a - 10c)
A. 49a2 - 140ac - 100c2
B. 7a2 - 10c2
C. 49a2 + 140ac - 100c2
D. 49a2 - 100c2
Answer: D
Mathematics
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Solve the differential equation subject to the initial conditions.2 
- 4xy = 8x; y = 8 when x = 0
A. y = -2 + 10ex2 B. y = 2 + 8ex2 C. y = -2 + 10e-x2 D. y = -1 + 9ex2
Mathematics
Calculate the value of the following numerical expression.
- 
? 
A. 
B. 
C. 
D. 
Mathematics
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree: 3; zeros: -4 and 3 - 2i
A. f(x) = x3 - x2 - 11x + 52 B. f(x) = x3 - 2x2 - 11x + 52 C. f(x) = x3 - x2 + 11x + 52 D. f(x) = x3 - 2x2 + 5x - 52
Mathematics
Find the real or imaginary solutions by completing the square.x2 + 4x + 53 = 0
A. 
B. {5, -9}
C. {-2 ± 7i}
D. {2 ± 7i}
Mathematics