✨ Best Answer ✨
縦:10+(10-x)
横:8+(8-2x)+8
(1)(20-x)(24-2x)=360
(2)480-40x-24x+2x²=360
2x²-64x+120=0
x²-32x+60=0
(x-2)(x-30)=0
x=2,30
12>xよりx=2
✨ Best Answer ✨
縦:10+(10-x)
横:8+(8-2x)+8
(1)(20-x)(24-2x)=360
(2)480-40x-24x+2x²=360
2x²-64x+120=0
x²-32x+60=0
(x-2)(x-30)=0
x=2,30
12>xよりx=2
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