Answer:
2y² + (- 2y)
Explanation:
Simplifying an expression:
y² + y² - 3y + y
Combine like terms. Like terms have same variable with same exponent. y² & y² are like terms and (-3y) & y are like terms.
y² + y² = 2y²
-3y + y = -2y
y²+ y² -3y + y = 2y² - 2y