A few days ago
Without using a calculator, find the answer to this equation?
Without using a calculator, find the value of:
(5^1/2 + 2)^6 – (5^1/2 – 2)^6
/
8x(5^1/2)
Top 6 Answers
A few days ago
Favorite Answer
(a^2-b^2) = (a+b)(a-b)
so:
[(5^1/2 + 2)^6 – (5^1/2 – 2)^6] / 8x(5^1/2) =
[(5^1/2 + 2+5^1/2 – 2)^3*(5^1/2 + 2-5^1/2 – 2)^3]/ 8x(5^1/2) =
[(2*5^1/2)^3*(4)^3]/ 8x(5^1/2) =
5*64 = 320
0
A few days ago
Let (5^1/2+2) = a
a^6 – a^6 =0
0 / {8(5^1/2)} = 0
1
A few days ago
The answer is 0. On the top part, anything minus itself is automatically zero, so you don’t even have to figure out what X is – 0/x is still 0.
0
A few days ago
Just been trying to find an elegant solution to this in the mathematics section, and I can`t ! ! !……. I`ll keep on trying………there must be one which doesn`t involve some mind blowing expansions ! Back in a bit.
0
A few days ago
5777.999779
0
A few days ago
no
0
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