Mathematics
Junior High
Solved
3番の採点お願いしたいです🙏🏻
1=(y+7)(y-3)
(2) X(22) 36
=(x+6)
(9) X74
79-56
- (a-8)(a+7)
-=((x+ 2) (x-2)
3 (1) 2x+2x-12.
= 2(x²+x-6)
=2(x+3)(x-2)
(3)490²-16
(7X+4) (72-4)
=
(5)(x-2) ²49
= (1 ²42 + 4) - 49
=(26-2) ²49
(8) y ² 207 + 190
= (1-10)
(10) n²-
175
(2) 3a²-75a
30 (²25)
=
(4) 4x² - 4x + 1
(2x-1)
=
(6) (a+3) ²5 (a + 3) +4
= M ²5M+4
(M-4) (M-1)
= (a + 3-4) (a+3-1)
= (a-1)(a+2)
(m²a) (-²)
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ありがとうございます!!
(2)の答えは3a(b+5)(b-5)で合っているのでしょうか??