Question

Factories
x⁴-19x²y²+25y⁴​

Answer 1

Step-by-step explanation:

x^4 - 10x^2y^2 -9x^2y^2 +25y^4

=x^4-2×x^2×y^2×5 +(5y^2)^2 -(3xy)^2

=(x^2-5y^2)^2-(3xy)^2

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