Mathematics
Senior High
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く間3>()(3xt1)(22)
= 3+(3x2+ lx1)x+2
= 3x+ c+ 2
(2) (22-3)(32t2)
= 6x+(2x2+ -3×3)x-6
- 62-52-6
(3) (2a6+1) (ab-3)
2016+(2x3+121)ab-3
= 2a'6 -5ab-3
(4) (x-24)(5x-4)
5°t(l«-|+(2x5))x+2ば
- 5c-112 +242
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