Question

Find the product: (8n - 3)(5n+7)

Answer 1

`{40n^2 + 41n-21`

Explanation:

Use the method FOIL

FOIL = First, outer, inner, last

Example: (a + b) (c + d) = ac + ad + bc + bd

(8n - 3)(5n + 7)

40n^2 + 56n - 15n - 21

40n^2 + 41n - 21

Answer 2

`40n^(2) +41n-21`

Explanation:

Remember to FOIL (first, outer, inner, last)

8n(5n)=
`40n^(2)`

8n(7)=56n

-3(5n)=-15n

-3(7)=-21

Putting it all together, you get

`40n^(2) +56n-15n-21`

Collect like terms (the n's) and you get

`40n^(2) +41n-21`

Hope this helps!