What is (2+y)³ written out?
(2+y)3
= ((2+y)x(2+y))x(2+y)
= (4+4y+y2) x (2+y)
= 8 + 8y + 2y2 + 4y + 4y2 + y3
= y3 + 6y2 + 12y + 8
What is (2+y)³ written out ?
(2+y)3= ? (2+y)3=1⋅23⋅y0+3⋅22⋅y1+3⋅21⋅y2+1⋅20⋅y3 (2+y)3=8⋅y0+12⋅y1+6y2+y3 (2+y)3=8+12y+6y2+y3