Question

If x=-5 is the solution of the equation
(x+5) (x-3)=0 or not ? Explain.​

Answer 1

Answer:

yes it has 2 solutions

x=3,-5

Answer 2

Step-by-step explanation:

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5 – (3x + 4)

5 – 1(3x) – 1(+4)

5 – 3x – 4

5 – 4 – 3x

1 – 3x

Now I can solve in the usual manner:

1 - 3x = 1

-1 -1

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-3x = 0

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-3 -3

x = 0

Is "x = 0" a valid solution? Yes, indeed, it is, because zero is a valid number. It's not that the solution is "nothing"; it's that the solution is "something", and that this "something" is zero. So my answer is:

x = 0