once you simplify the sqrt of 8 and 18 do you multiply or add that number to the one outside the radical?

Question

Simplify by combining like terms:
5sqrt8 + 2sqrt18

Answer 1

5sqrt8 + 2sqrt18 =
5*8^¹/2 + 2*18^¹/2 =
5*[(4*2)^¹/2] + 2*[(9*2)^¹/2] =
5*[(4^¹/2)*(2^¹/2)] + 2*[(9^¹/2)*(2^¹/2)] =
5*[2*(2^¹/2)] + 2*[3*(2^¹/2)] =
5*2*(2^¹/2) + 2*3*(2^¹/2) =
10*(2^¹/2) + 6*(2^¹/2) =

= 16*(2^¹/2)

₢

Answer 2

For those with 7 digits, replace it to this: a million. grab a calculator. 2. Key contained in the first 3 digits of your living house telephone volume (no longer the realm code) 3. Multiply with the aid of 80 4. upload a million 5. Multiply with the aid of 250 6. upload the 4 digit # on the proper of your telephone volume 7. upload the 4 digit # on the proper of your telephone volume lower back. 8. Subtract 250 9. Divide volume with the aid of two If it would not supply you the outcomes you want, you may want to nicely be doing something incorrect. be effective to enter = after each step.

Answer 3

You have to treat sqrt(2) as a variable.

In the above case, it becomes
10 sqrt(2) + 6 sqrt(2) = 16 sqrt(2)

The same way that

10x + 6x = 16x

Since sqrt(2) is in its simplest form while staying exact, you're not allowed to touch it, but you can combine it as a like term.

Answer 4

5√(8) + 2√(18)
= 5(√4)(√2) + 2(√9)(√2)
= (5)(2)(√2) + (2)(3)(√2)
= 10√2 + 6√2
If you make √2 into x...
= 10x + 6x --- And you probably know that this...
= 16x

Therefore...
= 10√2 + 6√2
= 16√2

Hope that helped!

Answer 5

5sqrt8 + 2sqrt18
5* sqrt4 *sqrt 2 +2 * sqrt9 *sqrt2
=5*2*sqrt2 +2*3*sqrt2
= 10 sqrt2 +6sqrt2 = 16sqrt2

As shown, you multiply.

Answer 6

5sqrt(8) + 2sqrt(18)

Minute detail follows:

5sqrt(4*2) + 2sqrt(9*2)
5sqrt(4)sqrt(2) + 2sqrt(9)sqrt(2)
5*2sqrt(2) + 2*3sqrt(2)
10sqrt(2) + 6sqrt(2)
16sqrt(2)

Answer 7

5sq.rt8=10sq.rt2
2sq.rt.18=6sq.rt2
so adding
it is 16sq.rt.2

Answer 8

multiply i already told you