Factor completely. If the polynomial is prime, then state this as your answer.9x2 + 6xy - 8y2
A. (9x + 4y)(x - 2y)
B. (3x + 4y)(3x - 2y)
C. (3x - 4y)(3x + 2y)
D. prime
Answer: B
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A certain tree grows by 2/t + e(-t2/2) feet per year, where t is the time in years. Use the trapezoidal rule with whole year intervals to estimate the total growth during the stated time interval.From t = 1 to t = 3
A. 3.386 ft B. 2.202 ft C. 2.787 ft D. 2.777 ft
Find a polynomial of least degree with only real coefficients and having the given zeros.2 + i, 4
A. f(x) = x3 + 9x2 + 20x + 20 B. f(x) = x3 - 4x2 - (3 - 4i) x + 12 + 16i C. f(x) = x3 + 8x2 + 21x + 20 D. f(x) = x3 - 8x2 + 21x - 20
Solve the exponential equation. Express the solution set in terms of natural logarithms.?x+1 = e2x
Fill in the blank(s) with the appropriate word(s).
Write the complex number in rectangular form.
cis 270°
A. -i
B. -i
C. -2i
D. -