Question

limit X tends to 3 x square plus 4 X = 21

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$\lim_{x \to \33} x^2+4x = 21$

put x = 3

LHS = (3)² + 4(3)

       = 9 + 12

       = 21 = RHS

LHS = RHS

Hence proved

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