Question

find the product by using a suitable identity
a) (z+3)(z-7)

by using identity (x+a) (x+b) =x square +(a+bi) x +ab


Algebraic Identity​

Answer 1

Answer:

using identity a^2-b^2

=(a-b)(a+b)

(z+3)(z-b)

=z^2-b^2 Ans.