Provide an appropriate response.Solve the equation by factoring: x3 - 4x2 - 21x = 0
Fill in the blank(s) with the appropriate word(s).
x = 0, -3, 7
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (8 - 2t)i + (2t - 6)j + (8 + t)k
A. T = 
i - 
j - 
k
B. T = - 
i + 
j + 
k
C. T = 
i - 
j - 
k
D. T = - 
i + 
j + 
k
Mathematics
Subtract.4.965 - (-0.78)
A. 5.845 B. 5.745 C. 4.185 D. 3.873
Mathematics
Simplify using the rules for exponents.
3
A. 
B. 
C. 
D. 
Mathematics
Use the properties of fractions to simplify the expression.
Mathematics