x |
y |
2 |
3 |
3x+2y |
2x-3y |
x |
y |
2 |
3 |
3x+2y |
2x-3y |
3×2a+2×3a |
2×2a-3×3a |
12 |
5 |
12 |
5 |
4x+3y-2z |
x+y+z |
3a-2b |
b |
1 |
3 |
a |
b |
A.-7,-5,14,5 | B.-6,-8,3,4 | C.3,5,9,12 | D.2,3,6,12 |
x |
y |
3 |
4 |
x+y |
y |
x+2y |
2x-y |
a+b-c |
c |
a-b+c |
b |
-a+b+c |
a |
(a+b)(b+c)(c+a) |
abc |
A.8 | B.4 | C.2 | D.1 |
a+2b-3c |
2 |
b-2c+3c |
3 |
c+3a+2b |
4 |
a-2b+3c |
a+3b-2c |
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