Question

Factorise a⁴ - 100 using appropriate identity , then its value is equal to
(a² + 10) (a² + 10)
(a² - 10) (a² - 10)
(a + 10)²
(a² + 10) (a² - 10)​

Answer 1

Answer:

$(a^{2} +10)(a^{2} -10)$

Step-by-step explanation:

Rewrite it in the form {a}^{2}-{b}^{2}a  

2

−b  

2

, where a={a}^{2}a=a  

2

 and b=10b=10.