The product of two consecutive integers is 420 which quadratic equation can be used to find x the lesser number

Step-by-step explanation:

If the smallest number is 'x', then the other number = x +1

x*(x+1)= 420

Use distributive property

x*x + x*1 = 420

x² + x - 420 =0   > this is the required quadratic equation.

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