If a and b are integers and ab = 20. What cannot be valur of a+b
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given that a×b =20
so possible values of a and b are -4 and -5 or 4 and 5
so a+b can be -9 or 9
except of these value other values are not possible
so possible values of a and b are -4 and -5 or 4 and 5
so a+b can be -9 or 9
except of these value other values are not possible
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