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Popular >

expand (9n^7-1)^2

Solution

expand

(9 n^{7} - 1)^{2}

Solution

81 n^{14} - 18 n^{7} + 1

Solution steps

(9 n^{7} - 1)^{2}

Apply Perfect Square Formula:

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

(9 n^{7} - 1)^{2} = (9 n^{7})^{2} - 2 \cdot 9 n^{7} \cdot 1 + 1^{2}

= (9 n^{7})^{2} - 2 \cdot 9 n^{7} \cdot 1 + 1^{2}

Simplify

(9 n^{7})^{2} - 2 \cdot 9 n^{7} \cdot 1 + 1^{2} : 81 n^{14} - 18 n^{7} + 1

= 81 n^{14} - 18 n^{7} + 1

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Frequently Asked Questions (FAQ)

What is expand (9n^7-1)^2 ?
The solution to expand (9n^7-1)^2 is 81n^{14}-18n^7+1