Answer the question.Are the two expressions equivalent? Explain your answer.
- 
and 
What will be an ideal response?
Answers will vary. The two expressions are not equivalent, because one must use the distributive property when subtracting the second numerator from the first. The correct result would be 
.
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Use logic to solve the problem.How much dirt is there in a hole 9 feet wide by 2 feet long by 5 feet deep?
A. 45 ft3 B. None C. 90 ft3 D. 18 ft3
Factor the expression completely.5x4 - 80
A. (5x2 + 4)(x - 2)(x + 2) B. 5(x2 + 4)(x2 + 4) C. 5(x2 + 4)(x - 2)(x - 2) D. 5(x2 + 4)(x - 2)(x + 2)
Solve the equation after making an appropriate substitution.x4 - 50x2 + 49 = 0
A. {-49, 49} B. {-1, 1, -7, 7} C. {-50, 50} D. {-7, 7}
Solve the problem.An environmental organization has 23 members. Each member will be placed on exactly 1 of 4 teams. Each team will work on a different issue. The first team has 3 members, the second has 9, the third has 6, and the fourth has 5. In how many ways can these teams be formed?
A. 4.915946906 × 1018 B. 6.871260396 × 1011 C. 2.585201674 × 1022 D. 1.374252079 × 1011