Question

?
$(a + b)( a - b) =$
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Answer 1

Answer:

(a+b)(a-b)

= a²+ab-ab-b²

=a²-b²

Answer 2

$\huge{\boxed{\sf{\red{AnSwEr}}}}$

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

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Some more identities -

• $(x + y)^{2} = {x}^{2} + 2xy + {y}^{2}$

• ${(x - y)}^{2} = {x}^{2} + 2xy + {y}^{2}$

• ${(x + y + z})^{2} = {x}^{2} + {y}^{2} + {z}^{2} + 2xy + 2yz + 2zx$

• $(x + a)(x + b) = {x}^{2} + (a + b)x + (a \times b)$