Question

Can anybody help me im in need of help

Answer 1

Part 1:
`Expand \ 7x(x+4)`


`7x*x+7x*4`
`Distribute`


`Use \ Product \ Rule`
`x^ax^b=x^a^+^b`


`7x^2+7x*4`


`7x^2+28x`


Part 2:
`4x(2x^3-7x^2+x)`


`4x*2x^3+4x*-7x^2+4x*x`
`Distribute`


`4*2xx^3+4x*-7x^2+4x*x`


`Use \ Product \ Rule`
`x^ax^b=x^a^+^b`


`4*2x^1^+^3+4x*-7x^2+4x*x`


`4*2x^4+4x*-7x^2+4x*x`


`8x^4-4*7xx^2+4x*x`
`Gather \ like \ terms`


`8x^4-4*7x^1^+^2+4x*x`


`8x^4-4*7x^3+4x*x`


`8x^4-28x^3+4x*x`


`8x^4-28x^3+4x^2`


Part 3:
`The \ largest \ number \ that \ divides \ evenly \ into \ 12x \ and \ 20 \ is \ 4.`


`GCF = 4`


Hence Solved

Answer 2

The first question's answer is the second choice. The second question's answer is the first choice. The third question's answer is the second choice.