Question

Expand and combine like terms.
(8 – n^7)(8 +n^7)

Answer 1

Explanation:

(a - b)(a + b) = a² - b²

(8 - n⁷)(8 + n⁷) = 8² - (n⁷)² = 64 - n¹⁴ {(aˣ)ⁿ = aˣ*ⁿ }

Or

Use FOIL method

(8 - n⁷)(8 + n⁷) = 8*8 + 8*n⁷ + (-n⁷)*8 + (-n⁷)*n⁷

= 64 + 8n⁷ - 8n⁷ - n⁷⁺⁷

= 64 - n¹⁴