simplifying radicals?
回答 (3)
2009-03-02 2:24 pm
✔ 最佳答案
(4 + 2√3)(4 - 2√3) = 4² - (2√3)²= 16 - 12
= 4
2009-03-02 10:24 pm
16-8â3+8â3-4*3
16-12=4
16-12=4
2009-03-02 10:59 pm
(4 + 2â3)(4 - 2â3)
= (4)(4) + (2â3)(4) - (4)(2â3) - (2â3)(2â3)
= 16 + 8â3 - 8â3 - 4â9
= 16 - 4â(3^2)
= 16 - (4)(3)
= 16 - 12
= 4
= (4)(4) + (2â3)(4) - (4)(2â3) - (2â3)(2â3)
= 16 + 8â3 - 8â3 - 4â9
= 16 - 4â(3^2)
= 16 - (4)(3)
= 16 - 12
= 4
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