Write the following cube in expanded form_:- (2x+1)power3
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Answered by
1
Step-by-step explanation:
( 2x+ 1) ^3
using identity
( a+b)^3 = a^3+3a^2b+3ab^2+b^3
a=2x,b= 1
=(2x)^3 +3x(2x)^2X1 +3x(2x)1+ 1^3
= 8x^3+ 12x+ 6x+ 1
=8x^3+18x+1
Answered by
0
Answer:
(2x+1)³
Step-by-step explanation:
(2x+1)³
Using (a+b)³=a³+b³+3ab(a+b)
where a=2x and b= 1
=(2x)³+(1³) +3(2x)(1) ( 2x+1)
=8x³+1+6x(2x+1)
=8x³+1+12x²+6x
=8x³+12x²+6x+1 .
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