Question

(y2 + 5y + 6) (y2 + 8y - 3y - 24)+ 56​

Answer 1

Step-by-step explanation:

(y² + 5y + 6) (y² + 8y - 3y - 24) + 56

= (y² + 5y + 6) (y² + 5y - 24) + 56

= y²(y² + 5y - 24) + 5y(y² + 5y - 24) - 6(y² + 5y -

24) + 56

= y⁴ + 5y³ - 24y² + 5y³ + 25y² - 120y - 6y² - 30y +

144 + 56

= y⁴ + 5y³ + 5y³ - 24y² + 25y² - 6y² - 120y - 30y +

144 + 56

= y⁴ + 10y³ - 5y² - 150y² + 200