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CBSE Class 9 Answered

Q) In right angled triangle if two legs are 2 x plus 1 and 2 x squared plus 2 x , then hypotenuse is 
A) 2 x squared space plus 2 x plus 3
B) 2 x squared plus 2 x plus 1
C) 2 x squared plus x plus 1
D) 2 x squared plus x plus 2
Asked by banerjee_milky | 23 Jun, 2017, 02:43: PM
answered-by-expert Expert Answer
begin mathsize 16px style Correct space option colon space straight B Hypotenuse equals square root of open parentheses 2 straight x plus 1 close parentheses squared plus open parentheses 2 straight x squared plus 2 straight x close parentheses squared end root Hypotenuse equals square root of 4 straight x squared plus 4 straight x plus 1 plus 4 straight x to the power of 4 plus 8 straight x cubed plus 4 straight x squared end root Hypotenuse equals square root of 4 straight x to the power of 4 plus 8 straight x cubed plus 8 straight x squared plus 4 straight x plus 1 end root Hypotenuse equals square root of open parentheses 2 straight x squared plus 2 straight x plus 1 close parentheses squared end root Hypotenuse equals 2 straight x squared plus 2 straight x plus 1 end style
Answered by Sneha shidid | 23 Jun, 2017, 03:08: PM

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