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CBSE Class 11-science Answered

Explain the last step of the sol given below?

Asked by Vineeth K | 05 Apr, 2016, 07:06: AM
answered-by-expert Expert Answer
begin mathsize 14px style The space last space step space is square root of open parentheses 2 close parentheses squared plus open parentheses 2 close parentheses squared end root Now comma space first space do space the space squaring space of space the space numbers. space This space will space give square root of 4 plus 4 end root equals square root of 8 Now comma space express space 8 space in space terms space of space straight a space perfect space square. space That space number space is space 4. space So comma space we space get square root of 8 equals square root of 4 cross times 2 end root Now comma space we space know space that space square space root space of space 4 space is space 2. So comma space we space get square root of 4 cross times 2 end root equals 2 square root of 2 Therefore comma space we space have square root of open parentheses 2 close parentheses squared plus open parentheses 2 close parentheses squared end root equals 2 square root of 2 end style
Answered by Romal Bhansali | 05 Apr, 2016, 11:36: AM

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