Answer:
5y^2 + 10y + 5x^2
Step-by-step explanation:
there's only two like terms that can be combined.
2x+3=3x-4
try to isolate the x term
you must do the same thing to both sides or else it won't be equal anymore
2x+3=3x-4
add 4 to both sides
2x+3+4=3x+4-4
2x+7=3x+0
subtract 2x from both sides
2x-2x+7=3x-2x
0+7=x
7=x
the answer is x=7
Answer:
53.8
Step-by-step explanation:
45+8= 8
then add the decimal 0.0+0.8= 0.8
53.8
Notice how the top is an addition of two cubes, namely x and 2.
You can rewrite the equation as:

Now, (a + b)³ can be simplified down to (a + b)(a² - ab + b²)
Following the same pattern, we get:

Answer:
3 trees and a square mile takes 1 tree
Step-by-step explanation:
a square mile means 2 miles each