Mathematics
Senior High
1枚目が問題で(ⅳ)についての質問です。
2.3枚目が解答なのですが、赤線のところが分からないので教えてください
方程式を解け.
(i) x²+x-2=0
(ii) x²-2x-4=0
A (iv) (x+1)(x+2)(x+3)(x+4)=24 E
till to all t
意)
(iv))(x+1)(x+2)(x+3)(x+4)–24=0
là (x2+5) +10(x+5x)=0
x(x+5)(x2+5x+10)=0
r+or+10=r+5) + là so
=(x+1/2)+1/20
だから,x=0,-5 (0-1)
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