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Mathematics
Lukas Gilmore
13 January, 03:30
Simplify.
(5sqrt2-1) ^2
+2
Answers (
1
)
Jacey Kirk
13 January, 05:01
0
51 - 10sqrt (2)
Step-by-step explanation:
(5sqrt2-1) ^2
We need to FOIL
(5sqrt2-1) (5sqrt2-1)
first: (5sqrt2*5sqrt2) = 25 sqrt (2) ^2 = 25 * 2 = 50
outer: - 1 (5sqrt2) = - 5sqrt (2)
inner:-1 (5sqrt2) = - 5sqrt (2)
last: - 1*-1 = 1
Add these together
50 - 5sqrt (2) - 5sqrt (2) + 1
51 - 10sqrt (2)
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