Name: __________________ Course 3 - Extra Practice on Simplifying Expressions and Combining Like-Terms Simplify. 1. (6 𝑥 2 y)(-2xyz) 6 𝑥 2 𝑦 −2𝑥𝑦𝑧 3x(2x – 4) -4x(3x – 2) (-12x 𝑦 2 𝑧) 3𝑥𝑦 −12x 𝑦 2 𝑧 3𝑥𝑦 Factor: 7x – 21 Factor: 3x + 12 Collect Like-Terms. 9. 𝑥 2 +x + 1 + 3x + 𝑥 2 +2 5x – x + 2y – y xyz + yxz – zyx - 𝑥 2 yz gh – 4gh + 7g – 8h + h x(2x – 3) - 𝑥 2 - x 5 𝑥 2 - 3x + 5x - 4 𝑥 2 + 6 Simplify. (-2) – (-6) + (-4) Simplify. 26 + 3( 8 2 - 4 · 4 2 ) Simplify. 𝑥 5 𝑥 2 𝑥 · 𝑦 4 𝑦