Answer: The required expand form is [tex]33x-21x^2.[/tex]
Step-by-step explanation: We are given to expand the following expression :
[tex]E=3x(11-7x)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]
To expand the given expression, we must multiply 3x with each of the rems within the bracket.
The expansion of expression (i) is as follows :
[tex]E\\\\=3x(11-7x)\\\\=3x\times11-3x\times7x\\\\=33x-21x^2.[/tex]
Thus, the required expand form is [tex]33x-21x^2.[/tex]
