Mathematics
Junior High
Solved

この写真の18、19、20の解説お願いします!
全部じゃなくても大丈夫です!

(17) 19) 6x²+3x0²-2x²2-3x+3x 6x³ + x² 3x+y 2x-7y 4 10 15x+59 20 2x-y 3 + -Y 3 4 4x+145 20 x-3y 2 (18) 5x – (20) x+6y 3 +y x+2y 2x - 5y 6 3 -+x-y

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✨ Best Answer ✨

(17)で説明…
他のも要領は同じ。
整数は分母が1の分数として考える

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