Perform the indicated operations: √[50] + 2√[32] – √[8]?
回答 (7)
2009-02-27 3:52 pm
✔ 最佳答案
sqr (50) = sqr (25) * sqr (2) = 5 * sqr (2)sqr (32) = sqr (16) * sqr (2) = 4 * sqr (2)
sqr (8) = sqr (4) * sqr (2) = 2 * sqr (2)
total = (5 + 2*4 -2) * sqr (2) = 11 * sqr (2)
2009-02-27 4:06 pm
â50 + 2â32 - â8
= â(5^2 x 2) + 2â(4^2 x 2) - â(2^2 x 2)
= 5â2 + 2(4)â2 - 2â2
= 5â2 + 8â2 - 2â2
= 13â2 - 2â2
= 11â2
= â(5^2 x 2) + 2â(4^2 x 2) - â(2^2 x 2)
= 5â2 + 2(4)â2 - 2â2
= 5â2 + 8â2 - 2â2
= 13â2 - 2â2
= 11â2
2009-02-27 4:01 pm
â[50] + 2â[32] – â[8]
=â(25*2)+2â(16*2)-â(4*2)
=5â2+8â2-2â2
=11â2 answer//
=â(25*2)+2â(16*2)-â(4*2)
=5â2+8â2-2â2
=11â2 answer//
2009-02-27 4:00 pm
sqrt(50)=5 sqrt(2)
sqrt(32)=4sqrt(2)
sqrt(8)=2sqrt(2)
We have:
5sqrt(2)+2(4sqrt(2))-2sqrt(2) which is 11 sqrt(2).
You can add the sqrt(2) coefficients together. It's just like adding all the x's together in an equation.
sqrt(32)=4sqrt(2)
sqrt(8)=2sqrt(2)
We have:
5sqrt(2)+2(4sqrt(2))-2sqrt(2) which is 11 sqrt(2).
You can add the sqrt(2) coefficients together. It's just like adding all the x's together in an equation.
2009-02-27 3:57 pm
You need a calculator for this, but it's fairly easy.
Find the square root of 50 = (7.07)
Add 2 times the square root of 32 = 2x(5.66) = 11.32
7.07 + 11.32 = 18.39
Subtract the square root of 8 = 2.83
18.39 - 2.83 = 15.56
Find the square root of 50 = (7.07)
Add 2 times the square root of 32 = 2x(5.66) = 11.32
7.07 + 11.32 = 18.39
Subtract the square root of 8 = 2.83
18.39 - 2.83 = 15.56
2009-02-27 3:53 pm
sqrt(5) = sqrt(25*2) = sqrt(5^2 * 2) = 5sqrt(2)
2sqrt(32) = 2sqrt(16*2) = 2sqrt(4^2 * 2) = 8sqrt(2)
-sqrt(8) = -sqrt(4*2) = -sqrt(2^2 * 2) = -2sqrt(2)
Add them all up and you get 11sqrt(2).
Hope that helps!
2sqrt(32) = 2sqrt(16*2) = 2sqrt(4^2 * 2) = 8sqrt(2)
-sqrt(8) = -sqrt(4*2) = -sqrt(2^2 * 2) = -2sqrt(2)
Add them all up and you get 11sqrt(2).
Hope that helps!
2009-02-27 3:53 pm
â50 + 2â32 – â8 =
â(25 * 2) + 2â(16 * 2) – â(4 * 2) =
5â2 + 2(4â2) - 2â2 =
3â2 + 8â2 =
11â2
ANSWER: 11â2
â(25 * 2) + 2â(16 * 2) – â(4 * 2) =
5â2 + 2(4â2) - 2â2 =
3â2 + 8â2 =
11â2
ANSWER: 11â2
收錄日期: 2021-05-01 12:03:37
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