2012
Mathematics
67ca00ce0c643c71d77dee1f
Simplify (√6+2)2 −(√6−2)2
A.
2√6
B.
4√6
C.
8√6
D.
16√6
Correct Answer: 8√6
Explanation
√6+2)2 −(√6−2)2 = [(√6+2)+(√6 − 2)][(√6 + 2) − (√6 − 2)] = (√6 + 2 + √6 − 2)(√6 + 2− √6 + 2)] = (2√6)(4) = 8√6
√6+2)2 −(√6−2)2 = [(√6+2)+(√6 − 2)][(√6 + 2) − (√6 − 2)] = (√6 + 2 + √6 − 2)(√6 + 2− √6 + 2)] = (2√6)(4) = 8√6THIS WEEK's
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