Final answer:
To add the two polynomials (5y³ + 7y² + y + 7) and (4y² + 3), combine like terms by adding the coefficients of the terms with the same variable and power. The simplified polynomial expression is 5y³ + 11y² + 1y + 10.
Step-by-step explanation:
To add the two polynomials (5y³ + 7y² + y + 7) and (4y² + 3), we combine like terms. Like terms have the same variable raised to the same power, so we add the coefficients of these terms. First, let's add the terms with the variable y³:
5y³ + 0y³ = 5y³
Next, let's add the terms with the variable y²:
7y² + 4y² = 11y²
Now, let's add the terms with the variable y:
1y + 0y = 1y
Finally, let's add the constant terms:
7 + 3 = 10
Putting it all together, the simplified polynomial expression is:
5y³ + 11y² + 1y + 10