Asked by Kailee
What is (√5 + 4)(√5 - 2)?
Answers
Answered by
drwls
Use the rule that (a+b)(c+d) = ac + ad + bc + bd
5 + (4-2)ã5 - 8 = 2ã5 - 3
5 + (4-2)ã5 - 8 = 2ã5 - 3
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