Find the product.(2m - 9w)(2m + 9w)
A. 2m2 - 9w2
B. 4m2 + 36mw - 81w2
C. 4m2 - 81w2
D. 4m2 - 36mw - 81w2
Answer: C
Mathematics
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Use substitution to factor the trinomial.15x4 - 13x2 - 20
A. (3x2 + 1)(5x2 - 20) B. (15x2 - 5)(x2 + 4) C. (3x2 - 5)(5x2 + 4) D. (5x - 4)(3x + 5)
Mathematics
Write the indicated term of the binomial expansion.(5x + 2)5; 5th term
A. 1000x2 B. 400x C. 160 D. 200x
Mathematics
Use the two-stage method to solve.Maximizez = 5x1 + 4x2subject to:x1 + 2x2 = 15 x1 + x2 ? 12 2x1 + x2 ? 30 x1 ? 0, x2 ? 0
A. Maximum is 63 for x1 = 11, x2 = 2 B. Maximum is 75 for x1 = 15, x2 = 0 C. Maximum is 60 for x1 = 0, x2 = 15 D. Maximum is 57 for x1 = 9, x2 = 3
Mathematics
Rationalize the denominator. Assume that all variables represent positive values.
A. 
B. 
C. 
D. 
Mathematics