Question

(y-a)(y-b)=y2-(a+b)y+ab

Answer 1

Ответ:вот

Объяснение:

Answer 2

Yes, you are correct. The expression $(y-a)(y-b)$ can be expanded using the distributive property to get:

$(y-a)(y-b) = y(y-b) - a(y-b)$

Now, you can distribute $y$ and $-a$ to each term inside the parentheses:

$y(y-b) - a(y-b)$

$= y^2 - by - ay + ab$

Now, you can rearrange the terms to get the final expression:

$y^2 - (a + b)y + ab$

So, $(y-a)(y-b)$ is equal to $y^2 - (a + b)y + ab$, as you mentioned.