Question

if x = -4, find the value of
${x}^{2} - 4$


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Answer 1

x² - 4
If x = - 4

= (-4)² - 4
= 16 - 4
= 12

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Answer 2

x^2 = -4
(4)^2 = -4
16 = -4
16 - 4
12
12 is the correct answer