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प्रश्न
Find the square root of the following
4x2 + 20x + 25
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उत्तर
`sqrt(4x^2 + 20x + 25) = sqrt((2x)^2 + 2 xx 2x xx 5 + 5^2)`
= `sqrt((2x + 5)^2`
= |2x + 5|
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