Question

Cab you please help me...

Answer 1

Answer:

• - 2x² + x + 4
• 2x² + x + 4
• 3

Step-by-step explanation:

Given functions

• r(x) = x + 4
• s(x) = 2x²

Finding (r-s)(x), (r+s)(x), (r*s)(-1)

• (r - s)(x) = r(x) - s(x) = x + 4 - 2x² = - 2x² + x + 4
• (r + s)(x) = r(x) + s(x) = x + 4 + 2x² =  2x² + x + 4
• (r*s)(-1) = r(-1)*s(-1) = (-1 + 4)*(-1)² = 3*1 = 3

Answer 2

Answer:

1. - 2x² + x + 4

2. 2x² + x + 4

3. Answer = 3

Example functions we are given:

r(x) = x + 4

s(x) = 2x²

Now, we Find (r-s)(x), (r+s)(x), (r*s)(-1)

(r - s)(x) = r(x) - s(x) = x + 4 - 2x² = - 2x² + x + 4

(r + s)(x) = r(x) + s(x) = x + 4 + 2x² =  2x² + x + 4

(r*s)(-1) = r(-1)*s(-1) = (-1 + 4)*(-1)² = 3*1 = 3