Respuesta :

factor out the highest power of x which is x^2

21x^3y^2 – 3x ^2y + 75x^4
= x^2(21xy^2 - 3y + 75x^2)

factor out 3 as all coefficients are divisible by 3

= 3x^2(7xy^2 - y + 25x^2)

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