Answer:
.......
Step-by-step explanation:
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1) -8(9n-10) - 20
-72n + 80 - 20
-7n + 60
Can't factor
2) 90n+54
18(5n+3)
3) -72n+60
-12(6n-5)
4) -17n - 80
5) -160n
we have
we know that
and
substitute in the expression
therefore
<u>the answer is</u>
largest 4 digit number × largest 3 digit number
=9999 × 999
(10000-1)×(1000-1) = (a-b)(c-b)= ac-ab-bc+b^2
10000000-10000-1000+1 = 9989001
-6 negative six
3- 2 - 1 - 4 + 2 - 4= -6
