化简 (1+xsqrt(6))^2

解答

化简

(1 + x 6)^{2}

1 + 26 x + 6 x^{2}

求解步骤

(1 + x 6)^{2}

使用完全平方公式:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

(1 + x 6)^{2} = 1^{2} + 2 \cdot 1 \cdot x 6 + (x 6)^{2}

= 1^{2} + 2 \cdot 1 \cdot x 6 + (x 6)^{2}

1^{2} = 1

2 \cdot 1 \cdot x 6 = 26 x

(x 6)^{2} = 6 x^{2}

= 1 + 26 x + 6 x^{2}

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