You would plug them in and see if they work. B and D work
Answer:
Step-by-step explanation:
hello :
The expression 1/2mv^2
M=1.6x10^3
V=3.4x10^3
is : 1/2(1.6x10^3 )(3.4x10^3)²=2.72x 10^9
2x^2 + 8x = 0
2x(× + 4) = 0
2x = 0
x = 0/2 =0
x + 4 = 0
x = -4
Option C:

Solution:
Given expression:

To find which expression is equal to the given expression.

Expand the term 

Arrange the like terms together.


Factor the numerator 

Cancel the common factor g + 2, we get

Hence option C is the correct answer.
Answer:
3x + 6
Step-by-step explanation:
3(x + 2)
= 3(x) + 3(2)
= 3x + 6