1 answer

What is the value of #x^2+x-2# when #x=-2#?

Question:

What is the value of #x^2+x-2# when #x=-2#?

Answers

We simply substitute in #-2# everywhere #x# appears and then simplify:

#x^2+x-2=(-2)^2+(-2)-2=4-2-2=0#.

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