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When u equals 26, the value of the expression (31-u)^2 equals
25
When p equals 15, the value of the expression (25-p)x(25+p)
400
Which of the following is the square of a sum
(c-d)^2
c^2-b^2
b^2+c^3
(b+c)^2
Which of the following is the square of a difference
5^2-40x^2
(5-40x)^2
(5+40x)^2
5+40x
Simplify the expression (b+2)(b^2-2b+4)
b^3-8
8b+2
b^3+8
b^2+4
