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lubasha [3.4K]
3 years ago
10

Please please help!! I rlly need to pass this test

Mathematics
1 answer:
sweet [91]3 years ago
3 0

Answer:

x = -1

y = 1

Step-by-step explanation:

                         y = -x² + 2              (1)

                         y = x² + 4x + 4        (2)

matching (2) and (1);

                             -x² + 2 = x² + 4x + 4

          -x² - x² - 4x + 2 - 4 = 0

                     -2x² - 4x - 2 = 0

                        -x² - 2x - 1 = 0

                        x² + 2x + 1 = 0

                              (x + 1)² = 0

                                  x + 1 = 0

                                        x = -1

replacing in (1)

                             y = - x² + 2  

                             y = - (-1)² + 2

                             y = -1 + 2

                             y = 1

Verification;

 -x² + 2 = x² + 4x + 4

-(-1)² + 2 = (-1)² + 4(-1) +4

  -1 +  2 = 1 - 4 + 4

          1 =  1   ✔

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