Mathematics
Junior High
Resolved

この解き方教えてください💦

(2+1)(x-5) , -2(ズ-5)

Answers

✨ Best Answer ✨

(x+1)(x-5) = -2(x-5)

右辺を左辺に移項して、
(x+1)(x-5)+2(x-5) = 0

x-5 でくくって、
(x-5){(x+1)+2} = 0

{ } 内を計算して、
(x-5)(x+3) = 0

解いて、
x = -3, 5 ・・・(答え)

Post A Comment

Answers

Were you able to resolve your confusion?