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(1)(26-x)(35-x)=850
(2)(15-x)(18-x)=180
この問の解き方を教えてください😭💦💦
(1)はx=1,60
(2)はx=3,30 になります🙇‍♀️

二次方程式

Answers

✨ Best Answer ✨

(1)(26-x)(35-x)=850
→ 910-61x+x²=850
→ x²-61x+60=0
→ (x-1)(x-60)=0
→ x=1,60

(2)(15-x)(18-x)=180
→ 270-33x+x²=180
→ x²-33x+90=0
→ (x-3)(x-30)=0
→ x=3,30

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ありがとうございます😿❕❕助かりました🙇‍♀️

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