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Hello...The sum of two natural no.s is 12 and the sum of their squares is 74 .Find the no.s. |
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Answer» if y=7, X=5 if y=5,x=7 Step-by-step explanation: let FIRST and SECOND no be x and y respectively x+y=12 x²+y²=74 x=12-y (12-y)²+y²=74 144-24y+y²+y²=74 2y²-24y+144-74=0 2y²-24y+70=0 y²-12y+35=0 y²-5y-7y+35=0 y(y-5)-7(y-5)=0 (y-7)(y-5)=0 y=7 and y=5 if y=7, x=5 if y=5,x=7 |
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