Mathematics
Senior High
この計算はなぜダメなのですか?
(7) 3x²-5xy-2y²
2+2
31x²333
1→3
= (3x-2)(x-3)
(与式)=(x-2y)(3x+y)
(8) (与式)=(x+4y)(3x+2y)
-2y->-6y
(8) 1
(7) 1
3/
X
y-
y
3
#
-5y
-2y2
Answers
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