Multiple Choice: Read each item carefully. Choose the correct answer from the given choices. Encircle the letter of the correct answer.
1. Which mathematical statement is correct?
a)(3x - 4)(2x + 7)= 6x2 + 13x - 28
c. (4x - 5)(4x-5)= 16x2 + 25
b. (2x - y)(3x - y)= 6x2 - 5x + y2
d. (2x + 5)2 = 4x2 + 25
2. The side of the square with an area represented by x2 + 20x + 100 is?
a. x+10
b. X + 100
C. (x + 10)(x - 10) X
d. x-10
3. The area of the square is 4x2 + 12x + 9 square units. Which expression represents the length of the side?
a. (3x + 2) units
C. (4x +9) units
b. (2x + 3) units
d. (4x - 3) units
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