Question

упростите выражение (x-4y)(x+4y+5x)(5x-y)+3(5y^2+8x^2)​

Answer 1

Ответ:

$30x^{3} -106x^{2} y-60xy^{2} +16y^{3} +15y^{2} +24x^{2}$

Пошаговое объяснение:

$(x-4y)(x+4y+5x)(5x-y)+3(5y^{2} +8x^{2} )\\(x-4y)(6x+4y)(5x-y)+15y^{2} +24x^{2} \\(6x^{2} -20xy-16y^{2} )(5x-y)+15y^{2}+24x^{2} \\30x^{3} -6x^{2} y-100x^{2} y+20xy^{2}-80xy^{2} +16y^{3} +15y^{2} +24x^{2} \\30x^{3} -106x^{2} y-60xy^{2}+16y^{3} +15y^{2} +24x^{2}$