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3 years ago

Someone please help me thank you

Mathematics

1 answer:

Igoryamba3 years ago

8 0

Answer:

x = - 1

Step-by-step explanation:

Given

4x = x^2 - 5 Transfer 4x to the right side.

Solution

x^2 - 4x - 5 = 0 Factor

(x - 5)(x + 1)

You want the negative solution. That means that the middle sign must be plus.

x + 1 = 0 Subtract 10 from both sides

x = - 1 Ten on the left disappears by the subtraction process.

Is that correct?

4x = x^2 - 5

x = - 10

4*(-1) = (-1)^2 - 5

-4 = ? 1 - 5

-4 = - 4

and it does work.

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