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Mathematics 9 Online
OpenStudy (anonymous):

(4k+5)(k+1)=0

OpenStudy (vishweshshrimali5):

If xy = 0, then either x = 0 or y = 0 or both x and y = 0

OpenStudy (vishweshshrimali5):

here, x = 4k+5 y = k+1

OpenStudy (skullpatrol):

What is the question asking for @G.B.W ? Just posting an equation is not considered a question.

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