Mathematics
Junior High
Solved

(ー3X+4y)(3X+4y)を展開しなさいという問題で
僕はー9x²+16yの二乗とかいて、答えには16yの二乗ー9x²と書いてあったんですけど僕のじゃ間違いですか?(yの二乗の所はx²みたいな感じです)

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