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4 years ago

F(x)=6x^2-x Find f(-3)

Mathematics

2 answers:

Elan Coil [88]4 years ago

5 0

Answer:

327

Step-by-step explanation:

You will plug in the -3 for x. 6 times -3 equals -18. -18 squared equals 324. 324 minus -3 equals 327.

Lera25 [3.4K]4 years ago

5 0

Answer: $f(-3)=57$

Step-by-step explanation:

Given the following function:

$f(x)=6x^2-x$

To find $f(-3)$ you need to substitute the x value $x=-3$ into the function $f(x)$ given.

Therefore, when the input value (value of the variable "x") is -3, then the ouput value is:

$x=-3\\\\f(-3)=6(-3)^2-(-3)$

Remember the multplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-$

Then:

$f(-3)=57$

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