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To solve the equation -x - 3 = x2 – 2x-15, you
could graph of the following system.
y = -x-3
y = x - 2x - 15
Use the graph of this system to identify all
solutions of -x - 3 = x2 – 2x – 15.
-7
-3
0
4

Respuesta :

cheerchar13

Answer:

-3 and 4 on EDGE 2020

Step-by-step explanation:

onyebuchinnaji

The solution of the quadratic equation is -3 or 4.

Solution of the quadratic equation

The solution of the quadratic equation is calculated as follows;

-x - 3 = x² - 2x - 15

collect similar terms together;

x² - x - 12 = 0

x² - 4x + 3x - 12 = 0

factorize the equation as follows;

x(x - 4) + 3(x - 4) = 0

(x + 3)(x - 4) = 0

x + 3 = 0  or   x - 4 = 0

x = -3    or    x  =  4

Thus, the solution of the quadratic equation is -3 or 4.

Learn more about quadratic equation here: https://brainly.com/question/1214333