2 Answers

Pixeltom · Answer 1 · 2022-02-06T14:19:56+0000

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We have to find the value of f(-2) so we must place x = -2 in f(x) equation to get our required answer.

By Solving & simplifying we get,

$:\implies\sf{f(-2) = 3 {x}^(2) - 7}$

$:\implies\sf{f(-2) = 3 {( - 2)}^(2) - 7}$

$:\implies\sf{f(-2) = 3 * 4 - 7}$

$:\implies\sf{f(-2) = 12 - 7}$

$:\implies\sf{f(-2) = 5}$

Prabagaran · Answer 2 · 2022-02-11T02:18:40+0000

Answer:

f(-2) = 5

Explanation:

Put the value where the variable is, and do the arithmetic.

f(-2) = 3(-2)² -7 = 3(4) -7

f(-2) = 5

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