SOLUTION: Consider the rational expression 3x/(x^2-16). What values in the denominator must we be mindful of ? Explain why.
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-> SOLUTION: Consider the rational expression 3x/(x^2-16). What values in the denominator must we be mindful of ? Explain why.
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Question 458435: Consider the rational expression 3x/(x^2-16). What values in the denominator must we be mindful of ? Explain why. Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! The numbers we must be "mindful" of are the values of 'x' that makes the denominator zero. In this case, the expression would be "undefined".
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So we set x^2-16 to zero and solve for x:
x^2-16 = 0
x^2 = 16
x = sqrt(16)
x = +-4
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Answer: x cannot be +4 or -4
