Write using exponential notation.13 ? 13 ? 13 ? 13 ? 13
A. 135
B. 513
C. 5 ? 513
D. 5 ? 13
Answer: A
Mathematics
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Factor completely. If the polynomial is prime, state so.25x2 - 81y2
A. (5x - 9y)2 B. (5x + 9y)2 C. (5x + 9y)(5x - 9y) D. prime
Mathematics
Factor out the greatest common factor. Simplify the factors, if possible.(x - 4)(x + 5) + (x - 4)(x + 5)
A. (x - 4)(x + 10) B. (x - 4)(2x + 10) C. 2(x - 4)(x + 5) D. 2(x - 4)(2x + 10)
Mathematics
Write the system of linear equations represented by the augmented matrix. Use x, y, z, and, if necessary, w for the variables.
A. 
B. 
C. 
D. 
Mathematics
Write the complex number in standard form.
?
?
A. 17.64i B. 4.2i C. ?7.2i D. -4.2i E. -17.64i
Mathematics