Question

2. Simplify: y(y² + y + 5) + 7 and find its value for y = -1

Answer 1

Answer:

2

Step-by-step explanation:

y(y² + y + 5) + 7 = $y^3 + y^2 + 5y + 7$

y(y² + y + 5) + 7 for y = -1:

-1(1 + (-1) + 5) + 7 = 2

Hence, answer is 2.

Hope it helps!