Question

12x-[3x×3x×3x+5x×5x-{7x×7x-(4-3x-x×x×x)+6x×6x×6x}-3x]

Answer 1

Answer:

426x^2-828x

Step-by-step explanation:

12x-[37x-49x(-4+3x+x*-x*-x) 213x]

12x+12x(-4+2x)213x

24x-852x+426x^2

=-828x+426x^2

=426x^2-828x

Hope! this will help you