Answer:
36a2 - b2
Step-by-step explanation:
( 6a + b)( 6a - b)
36a2 - b2
6^2 a2 - b^2
x2 y2 = (xy)2
(6a)2 - b^2
(6a + b)(6a - b)
Hope that helps :)
-3(y + 5) + 3(2y + 6)
-3y - 15 + 6y + 18
3y + 3
Answer:
3y + 3
Hope this helps.
Answer:
1260 is cost price and 140 is profit.
Step-by-step explanation:
Answer:
C
Step-by-step explanation:

There’s two ways to substitute, but i think you mean if you know x but don’t know y. if that is true, then yes use substitution