Math, asked by STORM07, 10 hours ago

Factorisation of y⁴ - 81x⁴ is

Answers

Answered by pskanhaji47
0

Answer:

  • (y-3x) (y+3x) (y²+9x²)

Step-by-step explanation:

y⁴- 81x⁴= (y²)² - (9x²)²

= ( y² - 9x²) ( y²+9x²)

[a²-b²=(a-b)(a+b) ]

= ( y² - (3x)²) ( y²+ 9x²)

= (y-3x) ( y+ 3x) ( y² + 9x²)

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