Question

expand (x-5)(x-10)(x-7)​

Answer 1

Answer:

x^3-22x^2+155x-350 is the correct answer

Step-by-step explanation:

(x^2-10x-5x+50)(x-7)

(x^2-15x+50)(x-7)

=x^3-7x^2-15x^2+105x+50x-350

=x^3-22x^2+155x-350

Answer 2

Answer:

x^3-22x^2-55x-350

Procedure:

First multiply (x-5) x (x-10),

the result will come out as (x^2-15x+50)

then multiply (x-7) with (x^2-15x+50)

the answer will come out as

(x^3-22x^2-55x-350).

Sorry I could not attach any picture since I answered it with my PC.