Mathematics
Senior High
Solved
このピンクのところ、何故こうなるのですか?教えてください🙏
(28 2+6.c+3=0 r'+6.r+9=6
(ェ+3)°=6 エ+3=±/6 エ=-3±V6
(29) 2-4.r-5=0 x'-4c+4=9
(r-2)=9 x-2=±3 エ=5, エ=-1
30) 2+10.cー3=0 x'+10.r+25=28
(ェ+5)?=28 エ+5=±2/7
エ=-5±2/7
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉

なぜ+6ですか、、?🥲
(30)だと+何になるんですか?