rayoobrian001 rayoobrian001

12-02-2021
Mathematics

contestada

QUESTION THREE 30 MARKS
3a) multiply x + y by x - y

Respuesta :

howardabbie998 howardabbie998

12-02-2021

Answer:

x²+xy+yx-y²

Step-by-step explanation:

(x+y)(x-y)

x times x =x²

x times y= xy

y times x=yx

y times y=y²

Answer Link

12-02-2021

Step-by-step explanation:

It's x*x+x*y-x*y-y*y => x^2 +xy - xy- y^2 = x^2-y^2

Answer Link

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