Answer:
(x, y) --> (y, x)
Step-by-step explanation:
D
-2(-4+c)
-2 x -4= 8
-2 x c= -2c
8-2c
Answer:
the first one
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
Given
2x² - y ← substitute x = 3 and y = - 2 into the expression
= 2(3)² - (- 2)
= 2(9) + 2
= 18 + 2
= 20
