Answer:
or
Step-by-step explanation:
we have
f(3+√2 )=f(3− √2 )=0
so
x1=3+√2 and x2=3−√2 are the roots or x-intercepts of the quadratic equation
The quadratic equation in factored form is equal to
substitute
Find the value of the coefficient a
Remember that
f(1)=−8
so
For x=-1 -----> f(x)=-8
substitute
solve for a
apply difference of squares
therefore
simplify
Applying distributive property
Answer:
x = 143
Step-by-step explanation:
The chord- chord angle x is half the sum of the measures of the arcs intercepted by the angle and its vertical angle, that is
x = (140 + 146) = 0.5 × 286 = 143
Answer:
Step-by-step explanation:
Foil the equation!
1. You see that is to the second power so it means this
2. Then you use the Foil method. First, Outside, Inside, and Last.
3. Combined like terms
4. Answer!
A tip you can use to avoid Foil is this mental math trick: (Keep in mind this only works if the polynomial is being squared.)
1. Multiply the first number by itself =
2. Add the first number by itself =
3. Multiply the last number by itself =
4. Combined to form your answer =
NOTE: This is the same thing as a foil but it uses mental math so it takes less time!