Question

Multiply: 2m4(5m3 + 4m − 1)

A. 11m8
B. 10m7 + 8m5 − 2m4
C. 10m12 + 8m4
D. 10m7 + 8m4 − 2

Answer 1

2m^4(5m^3 + 4m − 1)
= 10m^7 + 8m^5 - 2m^4

answer
B. 10m^7 + 8m^5 - 2m^4

Answer 2

The correct option is B)
`10m^(7)+8m^(5)-2m^(4)`

Explanation:

we need to multiply the given expression

Given
`2m^(4)(5m^(3)+4m-1)`

Multiply polynomial term wise,

`(2m^(4)* 5m^(3))+(2m^(4)* 4m)-2m^(4)`

`10m^(4+3)+8m^(4+1)-2m^(4)`

`10m^(7)+8m^(5)-2m^(4)`

Therefore, the correct option is B)
`10m^(7)+8m^(5)-2m^(4)`