Question

(3x-4)²-(3x-4)-42. ​

Answer 1

Step-by-step explanation:

= 9x^2 + 16 - 24x - 3x +4 -42

= 9x^2 - 27x -22

Answer 2

Answer:

let 3x-4=y

then y2-y-42=0

y2-7y+6y-42=0

y(y-7)+6(y-7)=0

( y+6)(y-7)=0

y=-6or y=7

again put value x=-2/3 or x=11/3