Answered

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Find value of x when y = 1

Find Value Of X When Y 1 class=

Sagot :

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Answer:

x = 3.2

Explanation:

when y = 1

1 = x²-2x-3

x²-2x-3-1 = 0

x²-2x-4 = 0

  • using the formula:

                          [tex]x = \frac{ -b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]

                                      [tex]x = \frac{ 2 \pm \sqrt{(-2)^2 - 4(1)(-4)}}{2*1}[/tex]

                                               [tex]x = 1 + \sqrt{5}[/tex]

                                                 x = 3.236

                                                 x = 3.24 in 2 decimal places

                                                 x = 3.2  in nearest tenth

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