(a-b) 3a plus b the whole cube
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Step-by-step explanation:
a plus b Whole Cube Formula :
In this section, we are going to see the formula/expansion for (a + b)3.
That is,
(a + b)3 = (a + b)(a + b)(a + b)
Multiply (a + b) and (a + b).
(a + b)3 = (a2 + ab + ab + b2)(a + b)
Simplify.
(a + b)3 = (a2 + 2ab + b2)(a + b)
(a + b)3 = a3 + a2b + 2a2b + 2ab2 + ab2 + b3
Combine the like terms.
(a + b)3 = a3 + 3a2b + 3ab2 + b3
or
(a + b)3 = a3 + b3 + 3ab(a + b)
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