Question

how to find the domain

Answer 1

\[y=\sqrt{3x+4}\]

Answer 2

you can't have a square of a negative number
so 3x + 4 must be greater than or equal to zero
so your domain is
\[3x + 4 \ge 0\]
\[x \ge -\frac{4}{3}\]

Answer 3

thanks! I got the answer

Answer 4

awesome ^_^

Answer 5

Factor 5z(2z+1)-2(2z+1)

Answer 6

OH I SEE IT NOW
ignore my other anwer
it's (2z + 1)(5z -2)

Answer 7

can you help me with my other problems ,

Answer 8

won't know till you tell me the questions

Answer 9

Factor x2 + 9x + 20

Answer 10

can yu help with the steps

Answer 11

okay
so you need two numbers that multiply to 20 and add up to 9

the numbers at multiply to 20 are 2,10 1,20 and 4,5
only 4 and 5 add up to 9
so it's 4 and 5
so
(x + 4)(x + 5)

Answer 12

4a2+a-3

so we need two numbers that can muliply by a-3 right ?

Answer 13

no, this one is different, because there's a 4 in front of the a squared.

Answer 14

I'm going to try to explain this...so bear with me.... :x
so your answer is going to be something like this with numbers in place of the _
(_a + _)(_a + -)

Answer 15

Correction : (_a + _)(_a + _)

Answer 16

sigh..this is hard over the internet...

Answer 17

i know

Answer 18

go to this site
http://tutorial.math.lamar.edu/Classes/Alg/Factoring.aspx
it's really helpful
i'm sorry that i can't explain this. but read over the site. it explains it quite well. tell me how it goes

go to example 3 part e

Answer 19

thanks : )