Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
890 views
in Number System by (38.0k points)
closed by

If \(\sqrt{13-a\sqrt{10}}\) = √8 + √5, then a = 

A. - 5

B. - 6

C. - 4

D. - 2

1 Answer

+1 vote
by (36.4k points)
selected by
 
Best answer

√(13 - a√10) =√8 +√5

Squaring both side,..

= 13 – a√10 = 8 + 5 + 2 ×√8 ×√5

= 13 – a√10 = 13 + 2√40

= - a√10 = 4√10

= a = - 4

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...