Question

algebraic expression multiply
z(z + 1) by (z-7) ​

Answer 1

Answer:

z²+z/z-7

it cannot be cancelled because there I + and -symbol

Answer 2

AnsweR :-

$\sf z(z+1) \times( z-7)\\ \sf = (z^2+z)(z-7) = \\ \sf z^3-7z^2+z^2-7x$