Mathematics
Senior High
ここまでの問題の採点をお願いしたいです🙇♂️
6 P. 121 121436
(*) (1) 2x²-5x + 220
2μ-5x+2=0として、
²X=-=-1/2
-1
-4
(2x-1)(x-2)=0
V
X=Z, ZEX
29
2
1
(2₂) 2X² +5x+ 3 <0
2x+5x+3=0として、
-1
-1
2
x
3 -
(2x-1) (x+3) <0
-3+
(3) x² + 2x - 30
x=
)(=
-5
-34x<===
x+2x-1=0として、
-2+/2²-4x (x (1)
4
1x2
-b2+2/2
-1+√
-It√²²
-1-√2<x<-1+√√2
-1-12
6
5
L
Answers
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