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F(x) = 3x2 – x
Find f(10)

User Zach King
by
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1 Answer

5 votes

Answer: f(10) = 290

Concept:

Here, we need to understand the idea of evaluation.

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

Given expression

f(x) = 3x² - x

Substitute values into the expression

f(10) = 3(10)² - (10)

Simplify exponents

f(10) = 3(100) - (10)

Simplify by multiplication

f(10) = 300 - 10

Simplify by subtraction

f(10) =
\boxed{290}

Hope this helps!! :)

Please let me know if you have any questions

User Bach Lien
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