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प्रश्न
Solve the following equation: 25x (x + 1) = -4
योग
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उत्तर
25x (x + 1) = -4
`"x"^2 + "x" = -4/25`
`"x"^2 + "x" + 4/25 = 0`
`"x"^2 + 1/5 "x" + 4/5 "x" + 4/25 = 0`
`"x" ("x" + 1/5) + 4/5 ("x" + 4/25) =0`
`("x" + 1/5)("x" + 4/5) = 0`
`("x" + 1/5) = 0` , `("x" + 4/5) = 0`
x = `-1/5` , x = `-4/5`
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