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Practice Set 2.6Product of Pragati's age 2 years agoand 3 years hence is 84. Find her present a |
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Answer» suppose present age of pragati is x so (x-2)(x+3) = 84 x*x + x -6 = 84 x*x + x - 90 = 0 (x+10)(x-9) = 0 x=-10 or 9 |
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