Question

1. (3x+1)^2
2. (1+x)^3
please help fast please help please ​

Answer 1

Answer:

1= (3x)^2+2.3x.1.+(2)^2

Answer 2

Step-by-step explanation:

(3x+1)^2

step 1

Use binomial theorem (a+b)²=a² +2ab + b² to expand (3x + 1)²

9x²+6x+1 (answer)

(1+x)^3

use binomial theorem (a+b)²=a²+2ab+b² to expand (1+x)³

1+2x+x² (answer)

hope this will help

thank you