Mathematics
Senior High
どうしてこうなるのか教えて欲しいです🙏
y = (0000 - (00x-2x²-7000+ 180x
= - 2x²² + 40x + 3000
= -2(x²² - 20x) + 3000
= -2 {(x² - (0)² - 100} + 3000
って?
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