Question

(a+b) hole square =​

Answer 1

Answer:

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❥(A+B)²

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❥A²+B²+2AB .

You can find (a+b)2 by the following method:

(a+b)2=(a+b)∗(a+b)

Now, (a+b)∗(a+b)=a^2+ab+ba+b^2

By commutative property of multiplication,ab=ba

So, a^2+ab+ba+b^2

=a^2+2ab+b^2

Hence,

(a+b)²=a^2+2ab+b^2

few more formula -

(A-B)² = A²+B²-2AB

Hope it's helpful for you .

Answer 2

• A +B²+2AB .

You can find (a+b)2 by the following method:

• (a+b)2=(a+b)∗(a+b)

• Now, (a+b)∗(a+b)=a^2+ab+ba+b^2

[ commutative property of multiplication,ab=ba ]

• So, a^2+ab+ba+b^2

• =a^2+2ab+b^2

Hence,

= (a+b)²=a^2+2ab+b^2