Answer:

Step-by-step explanation:
=> 8x-6 = 15
Adding 6 to both sides
=> 8x = 15+6
=> 8x = 21
Dividing both sides by 8
=> x = 21/8 (In its simplest form)
Answer:
Step-by-step explanation:
When adding or subtracting rational expressions, it is easiest to find a common denominator.
Ex.

The common denominator would be 
We need to make both fractions have that denominator

Answer:
Q(0, 1 )
Step-by-step explanation:
To find where the curve crosses the y- axis let x = 0 in the equation and evaluate for y, that is
x = 0 → y =
= 1 , thus
Q(0, 1 )
(x+7)^2=x^2+2*7x+7^2=x^2+14x+49
(a+b)^2=a^2+2ab+b^2