Question

find the factors of x⁴- 81​

Answer 1

Step-by-step explanation:

rewrite x4 as(x2)2(x2) rewrite 81 as 92.sinces both terms are perfect square, factor using the difference square formula ,a2-b2=(a+b)(a-b) a2-b2=(a+b)(a-b) where a=x2 a=x2 and b=9.