when dennis is asked how old he is he responds with the following riddle: 400 decreased by 2 times my age is 244
1 answer:
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Answer:
The correct answer is option C.
Step-by-step explanation:
Let the number be x.
The square of a number exceeds that number by 12 .Mathematically can be written as:
Using middle term splitting to factorize the expression:
The two possible solutions are :
1) (x+3)=0
x = -3
2) (x-4)=0
x = 4