Solving a Quadratic Equation by Factorization Method
The sum of th...
Question
The sum of the squares of two consecutive positive integers is 545 , then the integers are 17 and 19. If true then enter 1 and if false then enter 0
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Solution
Let x be one of the positive integers.
Then the other integer is x+1, x∈z Since the sum of the squares of the integers is 545, we get x2+(x+1)2=545 ⇒2x2+2x−544=0 or x2+x−272=0 ⇒x2+17x−16x−272=0 or x(x+17)−16(x+17)=0 ⇒(x−16)(x+17)=0 Here x=16 or x=−17
But x is a positive integer.
Therefore reject x=−17 and take x=16 Hence, two consecutive positive integers are 16 and 17.