## Profunds77 2 years ago Can someone explain the distributive rule?

1. skullpatrol

What don't you understand?

Sure! basically 1(2+2) add 1 to each of the factors so you have (1+2) + (1+2) You distribute the outsider to each of the insiders. and it's not lonely anymore c: xD haha

3. skullpatrol

That^ is NOT right at all

4. Chelsea04

you multiply, not add, but the same idea yes.

5. Chelsea04

so if the equation is x(a+b) then what you'd end up with, after distribution is ax+bx

6. skullpatrol

@Profunds77 \$\$4( 90 + 12) = 4*90 + 4*12\$\$ Note 4 distributes as a MULTIPLIER of each term of the sum 90 + 12.

7. Chelsea04

what he said

8. Chelsea04

I like using letters instead :)

9. Profunds77

I was looking at a question answered and they mentioned the distributive rule instead of the foil method just looking for new technics that I can apply

10. Profunds77

Thanks

11. Chelsea04

FOIL as in: First Outside Inside Last Are you taliking about that foil method?

12. Profunds77

Yes

13. whpalmer4

FOIL is just a memory crutch to keep the work organized, but you're doing the distributive property. \[(a + b)(c + d) = a(c+d) + b(c + d) = ac + ad + bc + bd\] Compare with \[(a+b)(c+d) = ac + ad + bc + bd\]Same thing.

14. whpalmer4

Of course, if you prefer, this is equally valid: \[(a+b)(c+d) = ac + bc + ad + bd\] Whatever method gets you through it systematically and correctly....

15. UnkleRhaukus

\[A\star(B+ C)=A\star B+ A\star C\]