2007-07-16 18:21:43 · 8 answers · asked by wu_4533 2 in Science & Mathematics ➔ Mathematics
1024
2007-07-16 18:23:59 · answer #1 · answered by ktracy_2k 2 · 0⤊ 3⤋
2x is not 2 to the power of x it means 2 times x. unless x is the exponent then it's 2 to the power of x. But then you couldn't know the answer unless you knew what x was. I think it means 2 times x. anyone can see x is five. But 2 2x?? I don't know. Is there a dot or an * between the twos? If so, that means times as well. so it would be 2 times 2x which is 20 (two times 5 is 10, two times 10 is 20)
2007-07-17 01:27:24 · answer #2 · answered by Anonymous · 0⤊ 1⤋
2^x=10 squaring on both sides
we have (2 ^ x) ^ 2 = 10^2
= 100
hence 2 ^ 2x = 100
2007-07-17 01:27:45 · answer #3 · answered by ? 2 · 0⤊ 0⤋
If 2^x = 10 then 2^(2x) = (2^x)^2 = 100.
Done!
2007-07-17 01:29:35 · answer #4 · answered by semyaza2007 3 · 0⤊ 0⤋
2^x=10--> '^' means 'to the power of'
2^2x
=2^(x+x)
=2^x * 2^x
=10*10
=100
-----Alternatively,
2^2x
=2^(2*x)
=2^(x*2)
=(2^x)^2
=(10)^2
=100
2007-07-17 01:25:13 · answer #5 · answered by Jain 4 · 1⤊ 1⤋
2^x = 10
2^(2x) = (2^x)^2 = 10^2 = 100
2007-07-17 01:28:55 · answer #6 · answered by sahsjing 7 · 0⤊ 0⤋
(2^x) = 10
(2^x)² = 100
2^(2x) = 100
2007-07-17 02:38:01 · answer #7 · answered by Como 7 · 0⤊ 0⤋
its 1024.
2^2x
2x has been given as 10.
hence 2^10 = 1024
2007-07-17 01:27:25 · answer #8 · answered by anand t 2 · 0⤊ 2⤋