Question

x^2 + 19x - 20 factorise this ​

Answer 1

Answer:

Step-by-step explanation

x²+20x-x-20

x(x+20) -1 (x+20)

(x-1) (x+20)

x=1 and x= -20

Answer 2

Answer:

${x}^{2} + 19x - 20 </p><p>= {x }^{2} - x + 20x - 20 </p><p>=x(x - 1) + 20(x - 1) </p><p> = (x + 20)(x - 1)$