Factor completely.4x2 - 81
A. Prime
B. (2x + 9)(2x - 9)
C. (2x + 9)2
D. (2x - 9)2
Answer: B
Mathematics
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What will be an ideal response?
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Determine if the graph of the function is concave up or concave down.y = x2 - 4x + 4
A. Concave down B. Concave up
Mathematics
Let (m × n) denote a matrix of size m × n. Find the size of the following product, or state that the product is not defined.(2 × 1)(1 × 1)
A. 2 × 2 B. 2 × 1 C. 1 × 2 D. not defined
Mathematics
Solve for x.4-2x + 6 = 1
A. x = -3 B. x = 0.25 C. x = 5 D. x = 3
Mathematics