Join NOW to get access to exclusive study material for best results
(a+b) 2 =?
a2+ 2ab - b2
a2- 2ab - b2
a2+ 2ab + b2
(a+b)2= a2+2ab+b2
(x + y) 3 =?
x3 + y3 + 3xy(x + y)
x3 + 3x2y + 3xy2 + y3
Both A and B
None of these
(x + y)3 = x3 + y3 + 3xy(x + y) or x3 + 3x2y + 3xy2 + y3
By using the cubic identity, find the value of 153 - 133.
2197
3375
1178
3561
153 − 133= (15 - 13)(225 + 195 + 169) … using x3 - y3 = (x - y)(x2 + xy + y2)
= 2 × 589 = 1178
Queries asked on Sunday & after 7 pm from Monday to Saturday will be answered after 12 pm the next working day.
