Разложите на множители:
a[tex] x^{2} [/tex] + b[tex] x^{2} [/tex] - ay - b[tex] y^{2} [/tex] - a[tex] y^{2} [/tex] - by
a[tex] x^{2} [/tex] + b[tex] x^{2} [/tex] - ay - b[tex] y^{2} [/tex] - a[tex] y^{2} [/tex] - by
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