Answer:
You already know the answer is -108
Step-by-step explanation:
There is probably a formula for finding the coefficient of a variable in an expansion. But (x-3) is easy to square, and that gives us
x^2 - 6x +9
Now to square that quadratic trinomial I used an area model. You can get the entire expansion. But we are just only interested in the x terms. See image. They are in yellow on the image. You can see we get -54x two times. So
-54x + -54x is the -108x term you are interested in.
This may be a simple interest computation.
Simple Interest = Principal * interest rate * term
Principal = 1,000
interest rate = 3%
term = 2 years
Simple Interest = 1,000 * 0.03 * 2
Simple Interest = 60
Total Amount after 2 years: 1,000 + 60 = 1,060
Answer:
d = A or 49
Step-by-step explanation:
25^2 =625
24^2 = 576
625-576= 49 or 7^2
Answer:
The unknown angle = 126°
Step-by-step explanation:
From angles in a triangle.
The total sum of angles in a triangle = 180°
Let the unknown angle be x
27 + 27 + x = 180
X = 180-27-27
X= 180-54
X = 126°