中学二年生数学 多項式の足し算と引き算の計算問題

1次の計算をしなさい。

(1) (x + 3 + 3x + 2 )

(2) (-2x + 7 + 8x -9 )

(3) (x + 2x + 3x - 5 )

(4) (x^2 + 2x + 2x^2 - 4x )

(5) (9x^2 - 8x + 7x^2 + 3x )

(6) (-3x^2 + x + x^2 + 9x )

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1

(1) (4x + 5 )

(2) (6x - 2 )

(3) (6x - 5 )

(4) (3x^2 - 2x )

(5) (16x^2 - 5x )

(6) (-2x^2 + 10x )
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2次の計算をしなさい。

(1) ((2x + 1) + (5x + 8) )

(2) ((-3x + 4) + (7x + 2) )

(3) ((x + 3) + (-x + 3) )

(4) ((6x + 8) + (-2x - 2) )

(5) ((3x - 1) + (4x - 1) )

(6) ((-x + 5) + (9x + 6) )

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2

(1) (7x + 9 )

(2) (4x + 6 )

(3) (6 )

(4) (4x + 6 )

(5) (7x - 2 )

(6) (8x + 11 )

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3次の計算をしなさい。2番目のカッコは符号が逆になることに注意しなさい。

(1) ((4x + 3) - (2x + 1) )

(2) ((x + 5) - (3x + 2) )

(3) ((9x + 1) - (7x + 6) )

(4) ((2x + 8) - (10x - 3) )

(5) ((-x + 1) - (4x - 7) )

(6) ((-6x + 2) - (-5x + 4) )

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3

(1) (2x + 2 )

(2) (-2x + 3 )

(3) (2x - 5 )

(4) (-8x + 11 )

(5) (-5x + 8 )

(6) (-x - 2 )

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