How do you solve #(w - 9) ( w + 2) = 0#?

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Answer 1 · 2017-06-18T22:37:59

#w=9" "# or #" "w = -2#

Given:

#(w-9)(w+2) = 0#

Note that the product is zero if and only if at least one of the factors is zero.

So:

#(w-9) = 0" "# which implies that #w=9#

or:

#(w+2) = 0" "# which implies that #w=-2#