If $f (x) = 7 x^{2} - 4 x$ $f(x)=7x^2-4x$ , what is the value of $f (2)$ $f(2)$ ?

Question

If $f (x) = 7 x^{2} - 4 x$ $f(x)=7x^2-4x$ , what is the value of $f (2)$ $f(2)$ ?

1 Answer

Impact of this question

19244 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-10T11:13:11

$f (2) = 20$ $f(2)=20$

Explanation:

$To evaluate f (2) substitute x = 2 into f (x)$ $"To evaluate "f(2)" substitute x = 2 into "f(x)$

$f (2) = (7 \times 2^{2}) - (4 \times 2)$ $f(color(red)(2))=(7xxcolor(red)(2)^2)-(4xxcolor(red)(2))$

$\times x = 28 - 8 = 20$ $color(white)(xxx)=28-8=20$

Science

Math

Humanities

... and beyond

If $f (x) = 7 x^{2} - 4 x$ $f(x)=7x^2-4x$ , what is the value of $f (2)$ $f(2)$ ?

1 Answer

Explanation:

Related questions

Impact of this question

Science

Math

Humanities

... and beyond

If f(x)=7x2−4xf(x)=7x^2-4x, what is the value of f(2)f(2)?

1 Answer

Explanation:

Related questions

Impact of this question

If $f (x) = 7 x^{2} - 4 x$ $f(x)=7x^2-4x$ , what is the value of $f (2)$ $f(2)$ ?