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Answer:
3 • (2x - 7) - (x + 4) = 0
then do 3.1 Pull out like factors :
5x - 25 = 5 • (x - 5)
5 • (x - 5) = 0
4.2 Solve : x-5 = 0
Add 5 to both sides of the equation :
x = 5
Step-by-step explanation:
Answer:

Step-by-step explanation:
<u>Biquadratic Equations</u>
Solve:

The biquadratic equations are equations of degree 4 without the terms of degree 1 and 3.
Solving such equations requires to express the equation as a second-degree equation with
as the variable.
Rewriting the equation:

The quadratic equation can be factored as:

It leads to two equations:


The first equation has imaginary roots. Solving for x:




Where

The second equation has two real roots:





The roots are:

The horizontal component of the velocity of the shot is 35 cos 40 ft/sec which is constant
Therefore:-
Velocity = distance / time
35 cos 40 = 40 / t
t = = 40 / 35cos40 = 1.49 seconds to nearest hundredth
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