Find the product.(4 + 5x)(4 - 5x)
A. 16 - 25x2
B. 16 + 40x - 25x2
C. 16 - 40x - 25x2
D. 25x2 - 16
Answer: A
Mathematics
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Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (-3, 5) B. (3, -5) C. (-5, -3) D. (5, -3)
Mathematics
Find the real solutions of the equation.
+ 7 = 8
Fill in the blank(s) with the appropriate word(s).
Mathematics
Calculus can be used to find the slope of the line tangent to a curve. The slope of the tangent to the curve 
at 
is f'(a). Use f'(x) to find the slope of the tangent to 
at the given value of x.f'(x) = -x4 + 3x3 + 5x2 - 8x + 13 at x = 2
A. 31 B. -1 C. 25 D. 57
Mathematics
Use the even-odd properties to find the exact value of the expression. Do not use a calculator.csc 
A. -2
B. - 
C. 
D. 2
Mathematics