Mathematics
Senior High
Resolved
やり方答え教えて欲しいですm(*_ _)m、
次の計算をせよ。
b
a
(1)
a
b
x
(3)
+
x+1
= x(x-1)
=
+
1
1(x+1)
(x+1)(x-1) + (x-1)(x+1)
x(x-1)+1(x+1)
(x+1)(x+1)(x-1)x(x+1)
(2)
a-1
1-b
a
b
3
2
(4)
x+2 x+3
= 3(x+3)=2(x+2)
((+2)(x+3)(x+2)+3)
=(3x+9)-2(x+2)
(x+2x+3)
31-6-2x+2
Answers
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