MCQ
$a^2- b^2$ is a product of-
- ✓$(a + b)(a - b)$
- B$(a + b)(a + b)$
- C$(a - b)(a - b)$
- DNone of these.
✓
Answer
Correct option: A.
$(a + b)(a - b)$
A. $(a + b)(a - b)$
Solution:
$a^2 - b^2$ is a product of $(a + b)(a - b).$
Because:
$a(a - b) + b(a - b)$
$a^2 - ab + ab - b^2$
$ab$ is catted by $ab$
$a^2 - b^2.$
Solution:
$a^2 - b^2$ is a product of $(a + b)(a - b).$
Because:
$a(a - b) + b(a - b)$
$a^2 - ab + ab - b^2$
$ab$ is catted by $ab$
$a^2 - b^2.$
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