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in the given figure y=x^(2)+bx+c is a quadratic polynomial which meets x-axis at A and B and y-axis at C Q is vertex of quadratic polynomial and foot of perpendicular from Q to x-axis and y-axis are P and R respectively. Then answer the following questions. Q. If ("area of" DeltaABC)/("Area of rectangle" OPQR)=(8)/(3) satisfies the relation b^(2)=kc then k will be |
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Answer» `9` `(beta-alpha)^(2)=b^(2)-4c` `9C^(2)=4b^(4)-16b^(2)c` `4b^(4)-16b^(2)c-9c^(2)=0` `4b^(4)-18B^(2)c+2b^(2)c-9c^(2)=0` `(2b^(2)+c)(2b^(2)-9c)=0impliescgt0because2b^(2)+cne0` `(b^(2))/(c)=(9)/(2)implies(b^(2))/(c)=4.5` |
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