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CBSE Class 10 Answered

Q.6
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Asked by 1784393325200864 | 28 May, 2018, 10:21: AM
answered-by-expert Expert Answer
begin mathsize 16px style straight p left parenthesis straight x right parenthesis space equals space 3 straight x squared space plus space 11 straight x space minus 4 space

straight p left parenthesis straight x right parenthesis space is space straight a space Quadratic space Equation.
After space factorizing comma space we space get space straight x space equals space minus 4 space and space straight x space equals space 1 third
Since space straight m space and space straight n space are space zeroes space of space straight p left parenthesis straight x right parenthesis.
rightwards double arrow straight m space equals negative 4 space and space straight n space equals space 1 third
rightwards double arrow straight m over straight n space plus space fraction numerator straight n over denominator straight m space end fraction equals space 145
and space if space straight m space equals 1 third and space straight n space equals space minus 4 space
rightwards double arrow straight m over straight n space plus space fraction numerator straight n over denominator straight m space end fraction equals space 145


end style
Answered by Yasmeen Khan | 28 May, 2018, 12:38: PM
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