Question

Find the volume of the rectangle in the picture

Answer 1

Answer:

Step-by-step explanation:

Volume = length * width * height

= (x + 1) *x *(3x + 5)    

Multiply (x +1) and x

= (x*x + x*1) * (3x +5)

= ( x² + x) * (3x + 5)          

= x²*(3x +5 ) + x(3x +5)

=x²*3x + x²*5 + x*3x + x*5

= 3x³ + 5x² + 3x² + 5x

= 3x³ + 8x² + 5x