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CBSE Class 11-science Answered

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Asked by sudhanshubhushanroy | 19 Nov, 2017, 09:10: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight x squared plus straight b subscript 2 straight x plus straight c subscript 2 equals 0 rightwards double arrow straight b subscript 2 squared minus 4 straight c subscript 2 greater than 0 rightwards double arrow straight b subscript 2 squared greater or equal than 4 straight c subscript 2 Given space that space straight b subscript 1 straight b subscript 2 equals 2 open parentheses straight c subscript 1 plus straight c subscript 2 close parentheses straight b subscript 1 squared straight b subscript 2 squared equals 4 open parentheses straight c subscript 1 plus straight c subscript 2 close parentheses squared straight b subscript 1 squared straight b subscript 2 squared equals 4 open parentheses straight c subscript 1 minus straight c subscript 2 close parentheses squared plus 16 straight c subscript 1 straight c subscript 2 straight b subscript 1 squared straight b subscript 2 squared minus 16 straight c subscript 1 straight c subscript 2 equals 4 open parentheses straight c subscript 1 minus straight c subscript 2 close parentheses squared As space 4 open parentheses straight c subscript 1 minus straight c subscript 2 close parentheses squared greater or equal than 0 rightwards double arrow straight b subscript 1 squared straight b subscript 2 squared minus 16 straight c subscript 1 straight c subscript 2 greater or equal than 0 Hence comma space it space has space real space roots. end style
Answered by Sneha shidid | 30 Nov, 2017, 10:42: AM

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CBSE 11-science - Maths
For a real number r, the quadratics x² + (r - 1) x + 6 and x² + (2r + 1) x + 22 have a common real root. The sum of the possible values of r can be expressed as a/ b where a, b are relatively prime positive integers. Compute 10a + b
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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Asked by sohailsidmd002 | 11 Oct, 2020, 02:35: PM
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CBSE 11-science - Maths
find the value of p and q if the equation px²+5x+2=0 and 3x²+10x+q=0 have both roots in common.
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Asked by ssroul.tcbls | 02 Jul, 2020, 07:15: PM
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CBSE 11-science - Maths
   the equation x minus 2 to the power 2 + x - 2 - 2 = 0 has how many roots
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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