Question

3. When we find the cube of 38 by 'column method', we use the formula
(a) x + y) = (x + y) + (x - y)
(6) (x + y)2 = x + 3x+y + 3xy2 +y!
(c) (x + y) = x3 - 3x”y - 3xy2 + y3
(d) x3 + y = (x + y) + 3xy​

Answer 1

Answer:

option is (d) .

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Answer 2

Answer:

D)x3+y=(x+y)+3xy.....