Step-by-step explanation:
shown, how would the Moon look to an observer on the North Pole? B view B
Answer:
- 5
Step-by-step explanation:
Note that
(x + y)² = x² + 2xy + y², thus
x² + y² = (x + y)² - 2xy ← substitute given values
= 5² - 2(15)
= 25 - 30
= - 5
A polynomial is an algebraic equation that consists of more than one term. Otherwise, it is called a monomial. The technique in producing a difference of the squares is completing of the squares method. For a quadratic formula with a general form of ax2 + bx + c = 0, you can determine c such that the formula could be factored into two monomials. The equation would be (b/2)^2.
For example, if the equation is x^2 + 2x+ __ = 0, c is solved as follows:
c = (2/2)^2 = 1
The equation would be x^2 + 2x +1 = 0. When you simplify and factor it out, the equation would become (x+1)^2 = 0.