Question

expand 13x(15x+2)(17x+3)(3x^2-2x-1)(4x^3+3x^2-2x+3)

Answer 1

$13x\left(15x+2\right)\left(17x+3\right)\left(3x^2-2x-1\right)\left(4x^3+3x^2-2x+3\right)$

$=13x\left(255x^2+79x+6\right)\left(3x^2-2x-1\right)\left(4x^3+3x^2-2x+3\right)$

$=13x\left(765x^4-273x^3-395x^2-91x-6\right)\left(4x^3+3x^2-2x+3\right)$

$=13x\left(3060x^7+1203x^6-3929x^5+1292x^4-326x^3-1021x^2-261x-18\right)$

$=39780x^8+15639x^7-51077x^6+16796x^5-4238x^4-13273x^3-3393x^2-234x$