Question

solve this question.Chapter : Polynomial​

Answer 1

Answer:

( 2x + 1 )^3 = 8x^3 + 12x^2 + 6x + 1

Step-by-step explanation:

we use Pascal's triangle for the coefficients

                                             1

( a + b )^2         =                1, 2, 1

( a + b )^3         =              1, 3, 3, 1

so we need  1, 3, 3, 1

the powers of the terms will sum to 3

and starting the first term will be 3 and descend in 1s

thus,

( 2x + 1 )^3 = 1(2x)^3 + 3(2x)^2(1) + 3(2x)(1)^2+ 1⋅1^3

( 2x + 1 )^3 = 8x^3 + 12x^2 + 6x + 1

Answer 2

Answer:

hi mate ,

Step-by-step explanation:

there are two pictures plz check it ...

this is the correct answer I am them sure

I hope it will help you ✌️✌️