Math, asked by Anonymous, 1 month ago

if f(x) = 2x^3 + 3x^2 - 11x - 6 find f(3) and f(-2) and f(-1/2)

Answers

Answered by CopyThat
45

Answer:

  • 42.
  • 12.
  • 0.

Step-by-step explanation:

Given :

  • f(x) = 2x³ + 3x² - 11x - 6.

To find :

  • f(3).
  • f(-2).
  • f(-1/2).

Solution :

Now, f(3).

⇒ 2(3)³ + 3(3)² - 11(3) - 6

⇒ 2(27) + 3(9) - 11(3) - 6

⇒ 54 + 27 - 33 - 6

⇒ 81 - 39

42

Now, f(-2).

⇒ 2(-2)³ + 3(-2)² - 11(-2) - 6

⇒ -16 + 12 + 22 - 6

⇒ 34 - 22

12

Now, f(-1/2).

⇒ 2(-1/2)³ + 3(-1/2)² - 11(-1/2) - 6

⇒ 2(-1/8) + 3(-1/2)² - 11(-1/2) - 6

⇒ -21/8 + 3/2 + 11/2 - 6

⇒ -1/4 + 3/2 + 11/2 - 6

⇒ (-1 + 3 + 22)/4 - 6

⇒ 24/4 - 6

⇒ 6 - 6

0

Answered by apkop80
18

see attachment for ur answer

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