(5y³ + 0y² - 2y + 1) -(3y³ + 4y² - y - 6)
Slowly, deliberately, Leo turned the page of his own notebook. He crossed out his first attempt on problem #7. He rewrote the subtraction vertically, aligning the like terms: (5y³ + 0y² - 2y + 1) -(3y³
The answer key for “7-1 Additional Practice: Adding and Subtracting Polynomials” sat face-down on Ms. Kellar’s desk, a silent judge. a silent judge.