Question

factrice
y⁴-81
solve fast​

Answer 1

Answer:

(y-9)(y+9)(y²-9²) is the answer

Answer 2

$\large\fbox\red{Answer}$

$\sf⇒\:y^{4}-81$

$\sf⇒\:(y^{2})^{2}-9^{2}$

$\sf⇒\:(y^{2}+9)(y^{2}-9)$

$\large\fbox\red{✰\:Formula \:Used :-}$

$\sf⇒\:(a^{2}-b^{2})\\\\\sf\:⇒(a+b)(a-b)$

• Thnku❣