MCQ
The factors of $a^4 -$ $4a^2$ are
- ✓$a^2$ $(a - 2) (a + 2)$
- B$a (a - 2) (a + 2)$
- C$a (a + 2) (a + 2)$
- D$a^2$ $(a - 2)^2$
✓
Answer
Correct option: A.
$a^2$ $(a - 2) (a + 2)$
$a^4 - 4a^2 = a^2 (a^2 - 4)$
$= a^2$ $(a + 2) (a - 2)$ So correct answer will be option $A$
$= a^2$ $(a + 2) (a - 2)$ So correct answer will be option $A$
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