new example

[drea13]

3sqrt(125) + 2sqrt(80)
im lost do i take 5 out of 125
so 8sqrt(5) +2sqrt (80)
then what

 

[Deleted member 4993]

3sqrt(125) + 2sqrt(80)
im lost do i take 5 out of 125
so 8sqrt(5) +2sqrt (80) <<< Incorrect
then what

What are you supposed to do? Tell us the total problem with all the instructions.

 

[drea13]

add. simplify by collecting like radical terms

 

[masters]

3sqrt(125) + 2sqrt(80)
im lost do i take 5 out of 125
so 8sqrt(5) +2sqrt (80)
then what

Hi drea13,

Simplify: \(\displaystyle 3\sqrt{125}+2\sqrt{80}\)

\(\displaystyle 3\sqrt{25 \cdot 5}+2\sqrt{16 \cdot 5}\)

\(\displaystyle 3 \cdot 5 \sqrt{5}+2 \cdot 4 \sqrt{5}\)

\(\displaystyle 15 \sqrt{5}+8\sqrt{5}\)

\(\displaystyle 23\sqrt{5}\)

 

[drea13]

thanks this makes perfect sense