/分(金)
P25 閉1() ax-bz
-2la-b)
3年の教 一教科書 -
(2) 26+ab
(3) az+a2 +2a
= bl2b+a)
= al242+2)
ニ
(2) 102'y +5x
= 5x (279+)
(3) -24
三29(g-2)
(47486-6a6-10ab
=2ab (2a-36-5)
閉2(1) 6mz-2nス
= 22 (3m-n)
P26 間11)で72+10
= (2+2)(2+5)
(4) 22-9218
(3)だ+82+12
= (2+6)(2+2)
(2)xンクェ+6
ニ
Poク 関2(1) 2-22-15
(2)で-2x-8
= (2-4)(2+2) = (2+5)(2-2) =
(4)a-7a-8
(at)(a8)
(3) 2+32-10
問3(1)で+102+9
(2) ga53-36
(3)α'+1Pa+81
(2t1)(2+9) : :
(4)2-22+1
(2-12
(4ー3)(y+9)
(a+9)?
(5) ダ-149449
(3-7 )
(6)22-16x+64
ニ
P28間5(1) 236
= (2-6)(2-6)
(3)21
(2-1)(2-1) 3(8)18-)
(2) a-4
(4)16-
= (a-2)(at2) = (たー1)(201) =(8m)8
門6 1) 2-32+2
212-2)(2-1) :(2-8)(2-8)
(2)2-64
(3)ー4214
(4)22-52-24
(2-3)(28)
(522+132+36
(29)(4)
C62a+22a+121
(a+1111atl1)