Question

tell me what is the formula of ( A+B)
$(a + b) ^{2}$
​

Answer 1

Step-by-step explanation:

The a2 - b2 formula is given as: a2 - b2 = (a - b) (a + b)

If you would like to verify this, you can just multiply (a - b) (a + b) and see whether you get a2 - b2.

Verification of a2 - b2 Formula

Let us see the proof of a square minus b square formula. To verify that a2 - b2 = (a - b) (a + b) we need to prove LHS = RHS. Let us try to solve the equation:

a2 - b2 = (a - b) (a + b)

Multiply (a - b) and (a + b) we get

=a(a+b) -b(a + b)

=a2 + ab - ba - b2

=a2 + 0 + b2

=a2 - b2

Hence Verified

a2 - b2 = (a - b) (a + b)

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