Can someone help me sovle this problems?. :confused:


ƒ(x) = -3x^2 - 3x, find ƒ(-3).


and...


Simplify: 3√20 + √125 + 2√45


and...


Use 9 unit multipliers to convert 20,000 cubic centimeters to cubic miles.


Thanks... :pBonez

[QUOTE=Ms_Holiday]Can someone help me sovle this problems?. :confused:


ƒ(x) = -3x^2 - 3x, find ƒ(-3).


and...


Simplify: 3√20 + √125 + 2√45


and...


Use 9 unit multipliers to convert 20,000 cubic centimeters to cubic miles.


Thanks... :pBonez

ƒ(x) = -3x^2 - 3x, find ƒ(-3).

Sub in x = -3 and solve.

Simplify: 3√20 + √125 + 2√45

You can only add 'like' terms so try converting each term to root 5.