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Bumek [7]
2 years ago
9

On the set of axes, solve the following system of equations graphically for all values of

Mathematics
1 answer:
mel-nik [20]2 years ago
4 0
Y = x² + 4x - 5
y = 2x

x² + 4x - 5 = 2x
<u>     - 2x       - 2x</u>
x² + 2x - 5 = 0
x = <u>-(2) ± √((2)² - 4(1)(-5))</u>
                   2(1)
x = <u>-2 ± √(4 + 20)</u>
               2
x = <u>-2 ± √(24)
</u>             2
x = <u>-2 ± 2√(6)</u>
             2
x = -1 ± √(6)
x = -1 + √(6)    U    x = -1 - √(6)
y = 2x
y = 2(-1 ± √(6))
y = 2(-1) ± 2√(6)
y = -2 ± 2√(6)
(x, y) = (-1 ± √(6), -2 ± 2√(6))
<u />
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