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Given f(x) = 4x^2 - 5x, find f(0).

Question:

Given {eq}f(x) = 4x^2 - 5x {/eq}, find {eq}f(0) {/eq}.

Algebraic Expression

An algebraic expression is an expression that consists of constants, variables and algebraic operations like addition, subtraction, product, and division.

Mathematically

If there is a quadratic algebraic expression as

{eq}\displaystyle f(x)\ =\ ax^2\ +\ bx\ +\ c\\ {/eq}

Then if we have to get the value of f(x) at any value of x, just put it into the expression and get the value.

Answer and Explanation:

Here we have

{eq}\displaystyle f(x)\ =\ 4x^2\ -\ 5x {/eq}

Then

{eq}\displaystyle f(0)\ =\ 4\ \times\ 0^2\ -\ 5\ \times\ 0\ =\ 0 {/eq}


Learn more about this topic:

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Evaluating Simple Algebraic Expressions

from ELM: CSU Math Study Guide

Chapter 6 / Lesson 3
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