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Here's the question you clicked on:
nickiminaj14012
x2+7x=0
x=0,−7
it was guessable.
take an x from x^2 and 7x x(x+7)=0 now to make it easy set the x on the outside = 0 and x+7 =0 x=0 x+7=0.....x=-7
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