Wednesday

November 26, 2014

November 26, 2014

Posted by **just wondering** on Tuesday, February 9, 2010 at 7:42pm.

i have no clue what to do with the -3 in front of the f. please explain step by step as to how to do this question

the answer in the back is

-3x^2+24x-48

- math-functions starting -
**Reiny**, Tuesday, February 9, 2010 at 8:04pmThe problem probably said:

if f(x) = x^2 , find -3f(x-4)

f(x) = x^2

f(x-4) = (x-4)^2 = x^2 - 8x + 16

then -3f(x-4) = 3(x^2 - 8x + 16)

= -3x^2 + 24x - 48

**Answer this Question**

**Related Questions**

Algebra help - f(x)=x^3-4x^2-x+4 How do I find the x-intercept for this? This is...

Algebra 1 Explanation (Anyone, please!) - Please, can anyone explain the concept...

math - Which equation has the complex number 4-3i as a root? (1) x^2+6x-25=0 (2...

math-repost - Which equation has the complex number 4-3i as a root? (1) x^2+6x-...

algebra functions - can someone help me with this and explain it to me step by ...

functions - For each problem, construct two composite functions, . Evaluate each...

algebra functions - construct two composite functions, Evaluate each composite ...

Quick math help - In which step below does a mistake first appear in simplifying...

Physics - I really don't get why I am getting this question wrong? Please can ...

Physics - I really don't get why I am getting this question wrong? Please can ...