Answer:
x = √3 - 1 and x = -√3 - 1
Step-by-step explanation:
x^2 +2x - 2 = 0
To solve this equation, keep the variables on one side and constants on the other
x^2 + 2x = 2
Now to complete the square, divide the coefficient of x by 2:
2x ---> coefficient of x is 2
so 2/2 = 1
Now add the square of 1 to both the sides of the equation:
x^2 + 2x + (1)^2 = 2 + (1)^2
which makes it
(x + 1)^2 = 3
To solve it, take square root of both sides which gives
x = √3 - 1 and x = -√3 - 1
Answer:
4n + 4
Step-by-step explanation:
Azhar - n years old now.
Last year he was (n-1).
His mother was 4(n -1) last year.
Now his mother 4(n-1) + 1.
7 years later she will be 4(n - 1) + 1 + 7 = 4n - 4 + 8 = 4n + 4
Answer:
common ratio r = 5
Step-by-step explanation:
the common ratio r is the ratio of consecutive terms, that is
r = = = 5
Let's begin by listing out the information given to us:
This is perpendicular to the line
The equation is already in the slope-intercept form:
The slope of the parallel line is given by:
We proceed by substituting the values of x & y into the new equation, we have: