The answer to this is - 23/20
Answer:
We want to expand the expression:
We can just do it by brute force, this is:
First, rewrite our expression as the product of two square factors:
Now we can expand each one these two factors:
That can be simplified to
Now we can replace that in our original expression to get:
Now we can expand that last product, to get:
We can simplify that to:
That is the expanded expression.
Answer:
Step-by-step explanation:
x² - 6x + 7 = 0
x² - 6x = -7
Find 6÷ 2 = 3. Find 3² = 9. Now add 9 to both side
x² - 6x + 9 = -7 +9
x² - 2*x*3 + 3² = 2
(x - 3)² = 2
Solution
x - 3 = √2
x - 3 = ± 1.41
x = 1.41 + 3 ; x = -1.41 + 3
x = 4.41 ; x = 1.59
The probability of getting a green marble here is 7/10