Answer:
-3a^3 + 2a.
Step-by-step explanation:
21a3 − 14a / -7
= 21a^3 / -7 - 14a / -7
= -3a^3 + 2a.
Answer:
3
Step-by-step explanation:
Calculate the distance using the distance formula
d = 
with (x₁, y₁ ) = (- 9, 8) and (x₂, y₂ ) = (- 3, - 1)
d = 
= 
= 
= 
= 
= 
= 
×
= 3
Answer:
4
Step-by-step explanation:
(5x + 4y = 8) 2 = 10x+8y=16
(2x - 3y = 17)5 = 10x-15y=85
we can pick one of the equation and multiply it by a -1 which equals:
10x+8y=16
-10x+15y=-85
and -10 and 10 cancels out.
add 8 and 15 = 23y
add -85 and 16 = -69
divide -69 by 23 whcih equals -3
plug in the y value in any of the equation, i chose 2x - 3y = 17
you get 2x+9=17
2x=8
x=4
Answer:
x=2
Step-by-step explanation:
46x-2=45x
+2 +2
46x=45x+2
-45x -45x
x=2
