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28-08-2017
Mathematics

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The product of two consecutive whole numbers is 90.what are the two consecutive whole numbers

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28-08-2017

For this, you could use factoring or the quadratic formula, but I will answer this using factoring.
x(x+1)=90
x^2 + x =90
Subtract 90 from both sides= x^2 + x - 90=0
Factor the left side (x-9)(x+10)=0
Therefore the two whole numbers are 9 and 10.

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