Question

(5x² - y²) (x² + 3y²) + (2x² + y²) (x² – 3y²)


step by step explanation:-​

Answer 1

Answer:

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Step-by-step explanation:

(5x^2-y^2)(x^2+3y^2)+(2x^2+y^2)(x^2-3y^2)

=> 5x^4+15x^2.y^2-x^2.y^2-3y^4+2x^4-6x^2.y^2+x^2.y^2-3y^4

=>7x^4+9x^2.y-6y^4