Question

If f(x) = 2x2 – x,what is f(-6)?

Answer 1

`\sf \: f( - 6) = 78`

Explanation:

Given function,

→ f(x) = 2x² - x

Now we have to,

→ Find the required value of f(-6).

We have to use,

→ x = -6

Then the value of f(-6) will be,

→ f(x) = 2x² - x

→ f(-6) = 2(-6)² - (-6)

→ f(-6) = 2(36) + 6

→ f(-6) = 72 + 6

→ [ f(-6) = 78 ]

Hence, the value of f(-6) is 78.

Answer 2

your answer would be -58