# Some algebra questions

• May 9th 2005, 01:31 PM
hodap2001
Need Help With A Few More
Solve And Check. Like Any Restrictions (what Makes The Denominator Equal To Zero)
..1........5........ 30
---- + ---- = ----------
X+3 ....X-3... (x+3)(x-3)

Simplify

X^2 + 13x + 36 ....... X^2 + 4x
--------------- ./. -----------------
..X^2 - 3x + 2 ........X^2 + 15x + 56

........4 .................7
------------- + ----------
X^2 - 3x + 2 ......X^2 - 1

Solve By Using The Square Root Method
(11x - 4)^2 = 12

Determine Whether The Following Relation Is A Function
{(2,-8), (2,4) (6,5) (8, -2) (10, -3)

Evaluate The Following Function

G(x) = 5x + 3; G(x-1)
• May 9th 2005, 08:57 PM
Math Help
Determine Whether The Following Relation Is A Function
{(2,-8), (2,4) (6,5) (8, -2) (10, -3)

This is not a function because you have two y values for the same x value (2,-8) and (2,4)

Evaluate The Following Function

G(x) = 5x + 3; G(x-1)

G(x-1) = 5(x-1) + 3

G(x-1) = 5x - 5 + 3

G(x-1) = 5x - 2
• May 9th 2005, 09:05 PM
Math Help
..1........5........ 30
---- + ---- = ----------
X+3 ....X-3... (x+3)(x-3)

multiply the first fraction by (x-3)/(x-3)
multiply the second fraction by (x+3)/(x+3)

Then you get

(x-3).............5(x+3)..............30
---------- + ------------ = ----------
(x+3)(x-3)....(x-3)(x+3).......(x+3)(x-3)

then

x - 3 + 5x +5 = 30
6x +2 = 30
x = 28/6