Mathematics
Senior High
Solved
2行目のXの次が+だったり-で変わりますが
そこが分からないです
x²-(ソ-3) 2
=[x+(y-3)][x-(Y-3)]
=(x+x-3)(x-y+3)
6 次の式を因数分解せよ。(6点×3)
(1)(x+y)2+2(x+y)-8
(2)x2-y2+6y-9
cha
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ありがとうございます