7-root5/7+root5 (explain method by method)
Answers
Answered by
1
Answer:
7-√5/7+√5
:. 7-√5/7+√5 × 7-√5/7-√5_______rationalising the denominator
:. (7-√5)(7-√5)/7^2-√5^2____i)(a-b)(a+b)=a^2-b^2
:.49+5/49-5_____√a×√a=a
:.54/44
:. 27/22 is the answer.
Step-by-step explanation:
Rationalize the denominator :- to do this multiply the conjugate or opposite pair of denominator term by both th numerator and denominator.
Similar questions
Biology,
2 months ago
Social Sciences,
2 months ago
Computer Science,
2 months ago
Math,
5 months ago
Math,
5 months ago
Math,
11 months ago
Math,
11 months ago
Science,
11 months ago