Question

What is the possible value of x in the equation 4x²-11=72

Answer 1

$4 {x}^{2} = 72 + 11 = 83$

${x}^{2} = \frac{83}{4}$

$\implies |x| = \sqrt{ \frac{83}{4} } = \frac{ \sqrt{83} }{2}$

$\implies x = ± \frac{ \sqrt{83} }{2}≈±4.555...$

Answer 2

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Answer:

$\sqrt{x}$ where x = 2.75

Step-by-step explanation:

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