4(x² - 2) = 28
1. Distribute the 4
4x² - 8 = -28
2. Plug in 3 and -3
4(3)² - 8 = 28
4(-3)² - 8 = 28
3. Square 3 and -3
4(9) - 8 = 28
4(9) - 8 = 28
28 = 28
The reason both answers are the same is because whenever you put a negative number to an even power, the result becomes positive because any negative multiplied by a negative number is always positive.
28 = 28
The vertex form is 
Step-by-step explanation:
The given equation 
is a parabola. The vertex of the parabola is of the form 
The parameters of the parabola are 
and 
The vertex of the x-coordinate is given by 
Thus, substituting the values of a and b in , we get,
Now, substituting 
in , we get,
Thus, the vertex is 
The equation of parabola to be in vertex form is 
where a is the coefficient of 
, h is vertex of the x-coordinate and k is the vertex of the y-coordinate.
Hence, 
and 
Thus, substituting the values in the equation of the vertex form,
Hence, the vertex form is
Answer:
1 and -26
Step-by-step explanation:
Consider the factors of 26 (because the two numbers have to multiply to -26). These are: 1 and 26, 2 and 13.
2 and 13 cannot be added or subtracted from one another to get -25, but 1 and 26 can, or rather 1 and -26.
The answer is 168. 12% is also 0.12. 150(0.12) is 18. 150+18=168
Answer:
176
Step-by-step explanation:
88 * 2 = 176
