factorise (x^2 - 3x)^2 - 8(x^2 - 3x) - 20

x2-3x2-8x2-3x-20Let x2-3x=tt2-8t-20=t2-10t+2t-20=tt-10+2t-10=t+2t-10=x2-3x+2x2-3x-10=x2-2x-x+2x2-5x+2x-10=xx-2-1x-2xx-5+2x-5=x-1x-2x+2x-5   ANS...

  • 0
What are you looking for?