Question

इन सर्वसमिका को पूर्ण कीजिए -

please​

Answer 1

Answer:

1 .

$( \: a + b) {}^{2}$

=

$a {}^{2} + 2ab \: + b {}^{2}$

2.

$( \: a \: + \: b) {}^{2}$

=

$a ^{2} \: - 2ab \: + b {}^{2}$

3.

$a { }^{2} - b {}^{2}$

=

$( \: a + \: b \: )( \: a \: - \: b)$

4.

$( \: x \: + \: a \: ) \: ( \: x \: + \: b \: )$

=

$x {}^{2} \: + \: ( \: b \: + \: a \: ) \: x \: + \: ab$

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