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A two digit number is 4 times the sum of its digits and twice the product of its digits.Find the number.in quadratic equation |
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Answer» digits be x and y LET x is in the tens place then it SILL BECOME 10x let y is in once place the it will become1y the original NUMBER be 10x+yfrom the question 10x+y=4(x+y)10x+y=4x+4y10x-4x+y-4y=06x-3y=02x-y=02x=y. eq-1 again ACCORDING to question10x+y=2(xy)substitute y=2x10x+2x=2x(2x)12x/2x=2x6=2xx=3if x=3 then y=?2x=yy=6the number is 36Hope it helps you |
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