Find the mistake, then find the correct answer.Solve for x: x2 - 4x + 10 = 0 line 1x = 
line 2 x = 
line 3 x = 
What will be an ideal response?
The solution is incomplete. The result in line 3 can and should be simplified to 
therefore x is not a real number.
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Find the derivative of the function at the given point in the direction of A.
A = 4i - 3j
A. - 
B. - 
C. - 
D. - 
Factor f(x) into linear factors given that k is a zero of f(x).f(x) = x3 - (4 + 2i)x2 + (-5 + 8i)x + 10i; k = 2i
A. f(x) = (x - 2i)(x + 1)(x - 5) B. f(x) = (x - i)(x + 1)(x - 10) C. f(x) = (x - 2i)(x - 1)(x + 5) D. f(x) = (x + 2i)(x - 1)(x - 5)
Multiply. Write the result in the form a + bi.
? 
A. 14 B. 14i2 C. -14 D. -14i
Solve the problem.Find the height of a pine tree that casts a 48-foot shadow on the ground assuming that the angle of elevation from the point on the ground at the tip of the shadow to the sun is 63°. Round your answer to the nearest foot.
A. 94 ft B. 43 ft C. 24 ft D. 22 ft