SOLUTION: The sum of the ages of Mingfa and his father is 34 years . In 4 years time , the square of Mingfa's age will be equal to his father's age . FInd Mingfa's present age

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Question 252355: The sum of the ages of Mingfa and his father is 34 years . In 4 years time , the square of Mingfa's age will be equal to his father's age . FInd Mingfa's present age
Answer by checkley77(12844) About Me  (Show Source):
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M+F=34 OR F=34-M
(M+4)^2=(F+4)
M^2+8M+16=34-M+4
M^2+8M+M+16-34-4=0
M^2+9M-22=0
(M+11)(M-2)=0
M-2=0
M=2 YEARS OLD IS mINGFA'S AGE NOW.
2+F=34
F=34-2
F=32 AGE OF THE FATHER NOW.
PROOF:
(2+4)^2=32+4
6^2=36
36=36