What is the simplest form of the expression (5x + 3xy + 4y) + (4x – 2xy – 2y)? a. x + xy + 2y b. x2 + xy + 2y c. 9x + 5xy + 2y d. 9x + 5xy + 6y e. 9x + xy + 2y
2. 5y + 2z + 3x2 – (2y – 2z + 4x) is equivalent to: f. 7y + 4z + 3x2 – 4x g. 3y + 3x2 – 4x h. 3y + 4z + 3x2 – 4x j. 3y + 4z + 7x k. 3y + 4z + 7x2
3. which of the following polynomials is equivalent to (x – 1)(x + 1)(x – 1)? a. x2 – x + 1 b. x2 – x – 1 c. x3 – x2 – x + 1 d. x3 – x2 – x – 1 e. x3 – 2x2 – 2x + 1
4. what is the product (2a + 6)2? f. 2a2 + 12a + 36 g. 4a2 + 12a + 36 h. 4a2 + 36 j. 4a2 + 24a + 36 k. 4a2 – 36
5. among the following arithmetic operations, which could the symbol ♣ represent given that the equation (6 ♣ 1)3 – (4 ♣ 1)2 = 200 is true? i. subtraction ii. multiplication iii. division a. ii only b. iii only c. ii and iii only d. i and iii only e. i, ii, and iii