Question

find the value of 4x²+9/x²-12, when x=2​

Answer 1

Step-by-step explanation:

$at \: x = 2 \: the \: value \: of \: 4 {x}^{2} + \frac{9}{ {x}^{2} } - 12 \\ = 4 {(2)}^{2} + \frac{9}{ {(2)}^{2} } - 12 \\ = 16 + \frac{9}{4} - 12 \\ = 4 + \frac{9}{4} \\ = \frac{25}{4}$

Answer 2

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