Show that x2 plus 8x-40 equals 0?

Anonymous

∙ 16y ago

Updated: 8/17/2019

An equation, such as the one above, may be true for some values of the variable(s). There need not be any solution in the relevant domain.

To "show" something, in this context, you need an identity - an equation that is true whatever the value of the variable.

The above is NOT an identity, since for x=0 is gives -40 = 0 which is clearly not true.

Wiki User

∙ 16y ago

What else can I help you with?

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