Answer:
.
Step-by-step explanation:
Answer:
add a link by pressing the paperclip button
Step-by-step explanation:
First triangle side lengths: 9, 4, 8
First triangle perimeter: 21
Second triangle side lengths: 18, 8, 16
Second triangle perimeter: 42
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Answer:
The solutions
are
and the x-intercepts of
are 
Step-by-step explanation:
Finding the solutions to
means finding the roots, a root is where the function is equal to zero.
The x-intercept is the point at which the graph crosses the x-axis. At this point, the y-coordinate is zero.
To find the roots you need to:
Rewrite the equation with
and 

Solve by factoring






Using the Zero factor Theorem: if ab = 0 then a = 0 or b = 0 (or both a = 0 and b = 0)
The solutions to the quadratic equation are:

Substitute back
, solve for x

Apply the difference of squares formula


Using the Zero factor Theorem: if ab = 0 then a = 0 or b = 0 (or both a = 0 and b = 0)
The solutions are:

Because two of the solutions are complex roots the only x-intercepts are 