1
Question
Find two consecutive natural numbers whose product is 20.
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Solution
Ans :4,-5
Hint :
Let the numbers be x and x + 1. Then,
x(x + 1) = 20 ⇒x2 + x - 20 = 0⇒(x+5)(x−4)=0
Hint :
Let the numbers be x and x + 1. Then,
x(x + 1) = 20
⇒x2 + x - 20 = 0
⇒(x+5)(x−4)=0
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