Help With Roots!!!! (MATH)?
回答 (6)
2009-02-18 3:20 pm
✔ 最佳答案
2^9=512, so the answer is 2
2009-02-18 11:48 pm
9root512 =2 because the prime number '2' goes into 512 in 9 times.
To solve questions involving roots, it is best to write out the prime factors.e.g 12= 2 x 2 x 3
100=2 x 2 x 5 x 5=(2 x 5) x (2 x 5)
subsequently,
512=2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
243=3 x 3 x 3 x 3 x 3
5root243= 3
25=5 x 5
2root25= 5
2root100=10
3375=3 x 3 x 3 x 5 x 5 x 5=(3 x 5) x (3 x 5) x(3 x 5)
3root3375=15 (15 x 15 x 15=3375). From [email protected]
To solve questions involving roots, it is best to write out the prime factors.e.g 12= 2 x 2 x 3
100=2 x 2 x 5 x 5=(2 x 5) x (2 x 5)
subsequently,
512=2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
243=3 x 3 x 3 x 3 x 3
5root243= 3
25=5 x 5
2root25= 5
2root100=10
3375=3 x 3 x 3 x 5 x 5 x 5=(3 x 5) x (3 x 5) x(3 x 5)
3root3375=15 (15 x 15 x 15=3375). From [email protected]
2009-02-18 11:31 pm
9sqrt(512)
=9sqrt(64*4*2)
=9*8*2sqrt(2)
=144sqrt(2) answer//
=9sqrt(64*4*2)
=9*8*2sqrt(2)
=144sqrt(2) answer//
2009-02-18 11:25 pm
9â512
= 9â(16^2 x 2)
= 9â(16^2) x â2
= 9(16) x â2
= 144 x â2
= 144â2
= 9â(16^2 x 2)
= 9â(16^2) x â2
= 9(16) x â2
= 144 x â2
= 144â2
2009-02-18 11:20 pm
Note: 16² = 256
and 512 = 256 * 2
So,
9 sqrt(512) = 9 sqrt (256 * 2) = 16 * 9 sqrt(2) = 144 sqrt(2).
144 sqrt(2)
^_^
and 512 = 256 * 2
So,
9 sqrt(512) = 9 sqrt (256 * 2) = 16 * 9 sqrt(2) = 144 sqrt(2).
144 sqrt(2)
^_^
2009-02-18 11:18 pm
9 * sqr (512) = 9 * 16 * sqr (2) = 144 * sqr (2)
收錄日期: 2021-05-01 12:03:38
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