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Is 0.2 a root of the equation x2 – 0.4 = 0? Justify

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प्रश्न

Is 0.2 a root of the equation x2 – 0.4 = 0? Justify

योग
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उत्तर

No, since 0.2 does not satisfy the quadratic equation

i.e., (0.2)2 – 0.4 = 0.04 – 0.4 ≠ 0

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अध्याय 4: Quadatric Euation - Exercise 4.2 [पृष्ठ ३९]

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एनसीईआरटी एक्झांप्लर Mathematics Exemplar [English] Class 10
अध्याय 4 Quadatric Euation
Exercise 4.2 | Q 6 | पृष्ठ ३९

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