For the given parabola, use the discriminant to determine the number of x-intercepts.y = x2 + 6x - 3
A. no x-intercepts
B. one x-intercept
C. two x-intercepts
Answer: C
Mathematics
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Solve.x(28 + 7x) = 0
A. 0, -4 B. -14 C. -7, -4 D. -4
Mathematics
Find the quadratic approximation of f at x = 0.f(x) = sin ln(7x + 1)
A. Q(x) = 7x - 
x2
B. Q(x) = 1 + 7x + 
x2
C. Q(x) = 7x + 
x2
D. Q(x) = 1 - 7x + 
x2
Mathematics
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.
i
A. complex, pure imaginary B. real C. real, complex D. complex, nonreal complex
Mathematics
Find z1z2. Write your answer in standard polar form with the argument in radians.z1 = 7(cos 34° + i sin 34°), z2 = 4(cos 8° + i sin 8°)
A. 28(cos 26° + i sin 26°) B. 28(cos 42° + i sin 42°) C. 11(cos 272° + i sin 272°) D. 11(cos 42° + i sin 42°)
Mathematics