✨ ベストアンサー ✨
(7) y=2x²-3x+1
① y=2[x²-(3/2)x]+1
② y=2[{x-(3/4)}²-(3/4)²]+1
③ y=2{x-(3/4)}²-2(3/4)²+1
④ y=2{x-(3/4)}²-(1/8)
(8) y=-(3/2)x²+x-2
① y=-(3/2)[x²-(2/3)x]-2
② y=(-3/2)[{x-(1/3)}²-(1/3)²]-2
③ y=(-3/2){x-(1/3)}²-(-3/2)(1/3)²-2
④ y=(-3/2){x-(1/3)}²-(11/6)
(9) y=2(x-1)(x-2)
● y=2x²-6x+4
① y=2[x²-3x]+4
② y=2[{x-(3/2)}²-(3/2)²]+4
③ y=2{x-(3/2)}²-2・(3/2)²+4
④ y=2{x-(3/2)}²-(1/2)
ありがとうございますm(_ _)m😭😭