Question

x square - 23x + 42

solve this...​

Answer 1

x²-23x+42

=> x²-21x-2x+42

=> x(x-21)-2(x-21)

=> (x-21)(x-2)

Answer 2

X^2 -23X + 42

X^2 -2X -21X +42

X (X-2) -21 (X-2)

(X-2)(X-21)

Either, X=2; or X= 21