Positive integer
Negative integer
Variable
Variable coefficient
100

2(x + 3)

2x + 6

100
-3(a + b)

-3a -3b

100

a(2a+4)

2a2 +4a

100

2x(x-4)

2x2-8x

200

4(n-4)

4n-16

200
-2(-a -b)

2a + 2b

200

b(b-4)

b2-4b

200

2x(3x+5)

6x2+10x

300

3(2x+6))

6x + 18

300

-4(2a -2b)

-4a +8b

300

-c(2c+5)

-2c2-5c

300

-2x(3x+2)

-6x2-4x

400

5 (4b + 2b - 5)

20b - 25

400

-10(-2a+5b)

20a-50b

400

-d(10d+a)

-10d2-ad

400

-2x(-4x-5)

8x2+10x

500

12(2a + 2a -5) 

48a - 60

500

-20(-10a +2b +2a)

180a -40b

500

-f(-4f+2)

4f2-2f

500

-2x(10x-4x)

-12x2