Respuesta :
Answer:
See below in bold.
Step-by-step explanation:
(x²-2xy+y²)+(x²+2xy+y²)
= x²-2xy+y²+ x²+2xy+y²
= 2x² + 4xy + 2y².
(x²-2xy+y²)-(x²+2xy+y²)
= x²- 2xy + y²- x² - 2xy - y²
= -4xy.
Answer:
2
Step-by-step explanation:
If the constant of proportionality is k then,
y=kx
What number do we multiply by x to get y?
The constant of proportionality is 2.
