1. 21׳y+14ײy-7×y
2. 90+15y²-18×3×y²

Answer:Let's simplify each expression step by step:1. For the expression 21׳y + 14ײy - 7×y:- First, factor out the common term y:  y(21׳ + 14ײ - 7)- Next, factor the coefficients inside the parentheses:  y(7(3׳ + 2ײ - 1))- The simplified form is:  7y(3׳ + 2ײ - 1)2. For the expression 90 + 15y² - 18×3×y²:- Simplify the second and third terms:  - The third term is -18×3×y² = -54y²- Now, combine like terms:  90 + (15y² - 54y²) = 90 - 39y²Therefore, the simplified forms are:- Expression 1: 7y(3׳ + 2ײ - 1)- Expression 2: 90 - 39y²Step-by-step explanation:

Answered by rosezysoledad | 2025-08-18