what are the solution(s) of $x^2 - 4 = 0$?

$x = -4$ or $x = 4$
$x = -2$ or $x = 2$
$x = 2$
$x = 4$

Question

what are the solution(s) of $x^2 - 4 = 0$?

$x = -4$ or $x = 4$
$x = -2$ or $x = 2$
$x = 2$
$x = 4$

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Solving Quadratic Equations" ], "new_concepts": [], "current_concepts": [ "Solving Quadratic Equations", "Zeros of Quadratic Functions" ] } ## Isolate the quadratic term $$ x^2 = 4 $$ ## Apply the square root property $$ x = \pm\sqrt{4} $$ ## Simplify the roots $$ x = -2 \quad \text{or} \quad x = 2 $$

$x = -4$ or $x = 4$

$x = -2$ or $x = 2$

$x = 2$

$x = 4$

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Solving Quadratic Equations" ] }

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QUESTION IMAGE

Question

Explanation:

Isolate the quadratic term

Apply the square root property

Simplify the roots

Answer: