Question

factorise it fast
${x}^{3} - {23x}^{3} + 142x - 120$
​

Answer 1

$125 {x}^{2} - 120$

i hope it is right

it will help u

Answer 2

Step-by-step explanation:

x³-23x³+142x-120

=-22x³+142x-120

=-2(11x³-71x+60)

=-2(11x³+11x²+11x²-71x+60) {add and subtract 11x²}

=-2(11x³-11x²+11x²-11x-60x+60) {-71x can be written as -11x-60x}

=-2[11x²(x-1)+11x(x-1)-60(x-1)]

=-2(x-1)(11x²+11x-60)

Hence answer to your question =-2(x-1)(11x²+11x-60)

hope my answer is correct and it helps you..