Question

(5x+1 )cube in expanded form

Answer 1

Answer:

(5x +1)²

Using formula

(a+b)² = a² + b² + 2ab

(5x)² + (1)² + 2 × 5x ×1

25x² +1 + 10x

Answer 2

Answer:

( 5x + 1 ) ^3

Using identity (a+b) ^3 = a^3 + b^3 + 3ab ( a+b)

Step-by-step explanation:

(5x)^3 + (1)^3 + 3 × 5x × 1 ( 5x +1)

5x^3 +1 + 15x ( 5x +1)

5x^3 + 1 + 75x^2 + 15x

5x^3 + 75x^2 + 15x +1