Question

Factorize : (x^2-3x) + 8(x^2-3x) -20​

Answer 1

Answer:

5643161913464644545494946461946649164644964

Answer 2

Step-by-step explanation:

let x²-3x = y

then y²-8y-20

= y²+2y-10y-20

=y(y+2)-10(y+2)

=(y-10)(y+2)

=(x²-3x-10)(x²-3x+2)

={x²-5x+2x-10}{x²-x-2x+2}

={x(x-5)+2(x-5)}{x(x-1)-2(x-1)}

=(x+2)(x-5)(x-2)(x-1)