Math, asked by manjeshkumarrly, 5 months ago

दो लगातार सम संख्याओं का गुणनफल 1848 है तो उन संख्याओं का योग क्या होगा ​

Answers

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Question.

दो लगातार सम संख्याओं का गुणनफल 1848 है तो उन संख्याओं का योग क्या होगा ?

Solution.

☞we know that even numbers is

\sf\green{ 2, 4 ,6 , 8}

☞let one number be \sf\green{ x }

then , second number is \sf\green{x + 2}

\sf\red{product\: of\: this\: number\: is\: 1848}

so, \sf\green{ x ( x + 2) = 1848}

\sf\green{ x^2 + 2x = 1848 }

\sf\green{  x^2 + 4x -1848 = 0 }

\sf\green{ x^2 + 44x - 42x- 1848 = 0 }

\sf\green{ x( x+ 44 ) - 42(x + 44) = 0 }

\sf\green{ (x + 44 ) ( x - 42) = 0}

If \sf\green{ x + 44 = 0 }

\sf\green{ x = -44 }

Or, \sf\green{ x - 42 = 0 }

\sf\green{ x = 42 }

☞we take \sf\green{ x = 42 } because value of x should be postive.

☞so, one number x is \sf\green{ 42 }

and second number ( x + 2 ) is \sf\green{ 42+2 = 44. }

\sf\red{sum\: of \: numbers \: is }

\sf\green{ 42+ 44 = 86 answer. }

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