glowbaby123
31.10.2019 •
Mathematics
The first three steps in determining the solution set of the system of equations algebraically are shown.
y = x2 − x − 3
y = −3x + 5
what are the solutions of this system of equations?
(−2, −1) and (4, 17)
(−2, 11) and (4, −7)
(2, −1) and (−4, 17)
(2, 11) and (−4, −7)
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Ответ:
In order to solve the system of equations algebraically you have to follow those steps
we have
------> equation A
-------> equation B
Step 1
Equate the equation A and equation B
Step 2
Convert the quadratic equation in factored form
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side.
Rewrite as perfect squares
Square root both sides
Step 3
Find the values of y
Substitute the value of x in the equation B
For
For
therefore
the answer is
and
Ответ:
brh
Step-by-step explanation: