展开 ,-0.0625+(0.4-x)^2(1+0.1(5-x))

解答

展开

- 0.0625 + (0.4 - x)^{2} (1 + 0.1 (5 - x))

0.1775 - 1.216 x + 1.58 x^{2} - 0.1 x^{3}

求解步骤

- 0.0625 + (0.4 - x)^{2} (1 + 0.1 (5 - x))

展开

(0.4 - x)^{2} (1 + 0.1 (5 - x)) : 0.24 - 1.216 x + 1.58 x^{2} - 0.1 x^{3}

= - 0.0625 + 0.24 - 1.216 x + 1.58 x^{2} - 0.1 x^{3}

数字相加:

- 0.0625 + 0.24 = 0.1775

= 0.1775 - 1.216 x + 1.58 x^{2} - 0.1 x^{3}

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