1. Find (4r + 7s)(4r - 7s) A. 16r2 - 49s2 B. 16r2 + 49s2 C. 16r2 + 56rs + 49s2 D. 16r2 - 56rs + 49s2 Hint 2. State the excluded values of a and b in the expression . A. B. C. D. Hint 3. Solve . A. 4 B. 1 or 4 C. -2 D. 0 Hint 4. Solve . A. -2 or B. -2 or 7 C. -2 D. 5 Hint 5. Find the difference: A. -3x2 - 7x - 5 B. -3x2 + x - 5 C. -3x2 - 7x + 1 D. 3x2 - 7x - 5 Hint 6. Find the product of (4n + 5) and (2n + 3). A. 6n2 + 18n + 8 B. 8n2 + 22n + 15 C. 8n2 + 22n - 15 D. 6n2 + 20n + 12 Hint 7. Start with a square with side length. Create a large rectangle by adding two more squares of the same size, and remove a strip with a width of 1. What is the area of the new rectangle? A. x (3x – 1) = 3x2 – x B. x (x + 3) = x2 + 3x C. x (x – 1) = x2 – x D. x (3x + 1) = 3x2 + x Hint 8. Multiply the pair of binomials.(y + 2)( y – 6) A. y2 – 4y – 12 B. y2 + 4y + 12 C. y2 – 4y + 12 D. y2 + 4y – 12 Hint 9. Expand the expression.(6p – 7) 2 A. 36p2 + 84p – 49 B. 36p2 – 84p + 49 C. 36p2 + 49 D. 36p2 – 49 Hint 10. Find the quotient. Simplify A. B. C. D. Hint