Solve the equation by making an appropriate substitution.x4 - 40x2 + 144 = 0
A. {4, 36}
B. {2, 6}
C. {-2, 2, -6, 6}
D. {-2i, 2i, -6i, 6i}
Answer: C
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Find the time it takes a 3 æF capacitor to reach 10 V when charged through a 100 Kê resistor from a 20 V source.
a. 208 msec b. 300 msec c. 150 msec d. 470 msec e. 635 msec
Write the function as a product of linear and irreducible quadratic factors, all with real coefficients.f(x) = x3 + 8x2 + 11x + 28
A. (x - 7)(x2 + x - 4) B. (x + 7)(x2 + x + 4) C. (x + 7)(x2 + x - 4) D. (x - 7)(x2 + x + 4)
Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Find the standard form of the polynomial function of smallest degree with real coefficients satisfying the given conditions. f(0) = 12, 1 + i and -6 are roots
A. f(x) = x3 - 4x2 + 10x + 12 B. f(x) = x3 - 6x2 - 10x - 12 C. f(x) = x3 + 4x2 - 10x + 12 D. f(x) = x3 + x2 - 10x + 12