Solve and check.x(x - 1) = 12
A. 3, 4
B. -3, 4
C. -3, -4
D. 3, -4
Answer: B
Mathematics
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Factor completely.5x3 + 25x2 + 3x + 15
A. (x2 + 3)(5x + 5) B. (5x2 - 3)(x - 5) C. (5x2 + 3)(x + 5) D. (5x + 3)(5x - 3)(x + 5)
Mathematics
Solve.The side of a square equals the length of a rectangle. The width of the rectangle is 4 meters longer than its length. The sum of the areas of the square and the rectangle is 48 square centimeters. Find the side of the square.
A. 2 cm B. 16 cm C. 6 cm D. 4 cm
Mathematics
A single die is rolled twice, and the equally likely 36 outcomes are shown.
Find the probability of two numbers whose sum is greater than 9.
A. 6
B. 
C. 
D. 
Mathematics
Give the exact value of 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics