化简 (5x^3+4x^2)-(6x^2-2x-9)

解答

化简

(5 x^{3} + 4 x^{2}) - (6 x^{2} - 2 x - 9)

5 x^{3} - 2 x^{2} + 2 x + 9

求解步骤

(5 x^{3} + 4 x^{2}) - (6 x^{2} - 2 x - 9)

使用法则:

(a) = a

(5 x^{3} + 4 x^{2}) = 5 x^{3} + 4 x^{2}

= 5 x^{3} + 4 x^{2} - (6 x^{2} - 2 x - 9)

使用分配律:

- (a - b) = - a + b

- (6 x^{2} - 2 x - 9) = - 6 x^{2} + 2 x + 9

= 5 x^{3} + 4 x^{2} - 6 x^{2} + 2 x + 9

s im pl i f y \frac{- 14 x ^{3}}{x ^{3} - 5 x ^{4}}

s im pl i f y 57 + 37

s im pl i f y ((\frac{3 b}{2})^{2} + (\frac{4 a}{5})^{3})^{3}

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s im pl i f y sec^{2} (arctan (x))