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Advanced Math / Equivalent expressions Difficulty: Medium

Which of the following is equivalent to the expression $x to the fourth power, minus x squared, minus 6$ ?

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Explanation

Choice B is correct. The term x⁴ can be factored as $x squared, times, x squared$ . Factoring –6 as $2 times negative 3$ yields values that add to –1, the coefficient of x² in the expression.

Choices A, C, and D are incorrect and may result from finding factors of –6 that don’t add to the coefficient of x² in the original expression.