Mathematics
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高1 2種類以上の文字をふくむ式の因数分解

4x²-9y²-18y-9 という式の求め方がわかりません
誰か教えてください😖💧

答えは (2x+3y+3)(2x-3y-3) です

Answers

✨ Best Answer ✨

先ほどと同じです
=4x²-9(y²+2y+1)
=(2x)²-(3(y+1))²
=(2x+3(y+1))(2x-3(y+1))
=(2x+3y+3)(2x-3y-3)

芙 采 .

ありがとうございます🙇🏻‍♀️
簡潔でわかりやすいです!!

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