1 / 2√5 = √5 / (2√5√5) = √5/10
8/(√7 - 1) = 8(√7 + 1) / (√7 -1)(√7+1) = 8(√7 +1) / 6 = 4(√7+1)/3
a^2-b^2 = (a-b)(a+b)
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
1 / 2√5 = √5 / (2√5√5) = √5/10
8/(√7 - 1) = 8(√7 + 1) / (√7 -1)(√7+1) = 8(√7 +1) / 6 = 4(√7+1)/3
a^2-b^2 = (a-b)(a+b)