Question

HELP!!!
Which of these expressions are equivalent to 11sqrt(245x^3)+9sqrt(45x^3)?

A.) 5xsqrt(104x)
B.) 20sqrt(290x^6)
C.) 20xsqrt(290x)
D.) 104xsqrt(5x)

Answer 1

Hey if anyone can help me I'd really appreciate it.

Answer 2

Please someone respond. I really need help with this answer.

Answer 3

you have 11 sqrt(245x^3) that is equalt to 11 sqrt(49.5x^3)

Answer 4

and 9 sqrt (45x^3) that is equal to 9 sqrt(9.5x^3)

Answer 5

what is the sqrt(49)

Answer 6

7

Answer 7

good, and what is the sqrt(x^3)

Answer 8

ummm.....

Answer 9

that is the same as sqrt (x.x.x), so as long as you have a pair you can pull one out
for example you said that sqrt(49) was 7, because that is sqrt(7.7), it is a pair

Answer 10

so sqrt(x^3) you can pull out one x and one stays inside, because it has no pair, only one have a pair, so sqrt(x^3) = xsqrt(x)

Answer 11

do you understand the explanation ??

Answer 12

okay. i understand you so far.

Answer 13

so you have 11(7)xsqrt(5x) + 9sqrt(45x^3)

Answer 14

now we work on the other sqrt we have 9sqrt(9.5.x.x.x), so what do you take outside?

Answer 15

3

Answer 16

good 3 and what else

Answer 17

not sure

Answer 18

what about the x

Answer 19

one x

Answer 20

so you have
11(7)xsqrt(5x) + 9(3)x sqrt(5x)

Answer 21

can you take it from there ??

Answer 22

don't you just add everything up by now

Answer 23

first multiply 11x7 and 9x3 then add

Answer 24

104

Answer 25

correct so you have 104xsqrt(5x)

Answer 26

okay thanks so much. BTW I just became a fan.
Your Welcome

Answer 27

thanks, and yw :)

Answer 28

okay thanks so much. BTW I just became a fan.
Your Welcome