Multiply.
w5
A. 
w11 + 
w9 - 
w5
B. 
w6 - 
w4 + 
C. 
w11 + 
w9 - 
w5
D. 
w11 - 
w9 + 
w5
Answer: D
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The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product can be calculated.A is 1 × 4; B is 1 × 4.
A. AB is 4 × 1; BA is 1 × 4. B. AB is 1 × 4; BA is 4 × 1. C. AB is 1 × 1; BA is 4 × 4. D. AB cannot be calculated; BA cannot be calculated.
Factor completely. If the polynomial is prime, so state.x2 - 14xy + 48y2
A. (x - 6y)(x - 8y) B. (x + 6y)(x + 8y) C. (x - 6y)(x + 8y) D. (x + 6y)(x - 8y)
Find the values of x that satisfy the given condition for the function.Solve R(x) < 0 if R(x) = 
A. (-?, -1) ? (
, ?)
B. (-?, -3) ? (-1, 
)
C. (-3, -1) ? (
, ?)
D. (-?, -3] ? (-1, 
)
Completely factor the polynomial or state that the polynomial is prime.49x2 - 1
A. (7x - 1)(7x + 1) B. prime C. (7x - 1)2 D. (7x + 1)2