Question

If f(x)=2x^2-3x what is the value of f(5)

Answer 1

To find $f(5)$, all you need to do is substitute 5 in for $x$ in $f(x)$. This allows us to find our answer:

$f(5) = 2(5)^2 - 3(5)$

$f(5) = 50 - 15$

$f(5) = 35$

The answer is f(5) = 35.

Answer 2

The answer is 35

Here's how I got my answer:

Step 1: Replace all x's with $5$. Leaving us with $2(5)^2-3(5)$

Step 2: Solve $5^2$, which is $25$. That leaves us with $2(25)-3(5)$

Step 3: Solve $2(25)$, which is $50$. That leaves us with $50-3(5)$

Step 4: Solve $3(5)$, which is $15$. That leaves us with $50-15$

Step 5: Simplify 50-15 to get your answer, 35.