<span>3a4-2a2+5a-10)-(2a4+4a2+5a-2)
remove first set of parentheses:
apply "-" sign to second parentheses (distributive prop):
the - of a - becomes a + :
combine like terms:
Factor out the variables that are alike:
{(1)a^4 + (-6)a^2 + 0a + (-8)}}}
0a is just 0, makea the "a" term go away:
can try to factor as squares, but it doesn't work out:
8 = (-4) x (+2) product factors cannot add to make 6. </span>
1 ton= 2,000 pounds
STEP 1:
Multiply number of tons by 2,000 pounds
= 3 tons * 2,000 lbs/ton
= 6,000 lbs
STEP 2:
Add the extra pounds given (600 pounds) to calculated pounds in step 1
= 6,000 lbs + 600 lbs
= 6,600 pounds
ANSWER: 3 tons 600 pounds is equal to 6,600 pounds.
Hope this helps! :)
5 to be honest I just guess
The order in which gifts are received doesn't matter - if child X gets toy 1 then toy 2, it's the same as giving child X toy 2 then toy 1 - so we are counting combinations.
The eldest child receives 3 of the 7 gifts, so they have

possible choices of gifts.
The next child receives 2 of the remaining 4 gifts, so they have

choices.
The last child receives the remaining 2 gifts, and there is only

way to select the gifts for them.
By the multiplication using, the total number of ways of distributing 7 gifts among 3 children in the prescribed way is 35 • 6 • 1 = 210.