Question

A rectangle has a height of 7 and a width of a^4+5a^2+4a .

Answer 1

Answer:

7a^6+35a^4+28a^2

Step-by-step explanation:

7a^2(a^4+5a^2+4)

Answer 2

Answer:

  7a^4 +35a^2 +28a

Step-by-step explanation:

Area is the product of height and width:

  area = height × width

  = 7 × (a^4 +5a^2 +4a)

  area = 7a^4 +35a^2 +28a . . . . . . use the distributive property