Solve..............................
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Let his present age b x yrs..
Then his age, 5 yrs ago =(x-5)yrs
His age 7 years hence =(x+7)yrs
Acc. to question,
(x-5)(x+7)=28
=>x2+2x-63=0
=>x2+9x-7x-63=0
=>x(x+9)-7(x+9)=0
=>x=-9,7...
Negative can't b the answer. Therefore answer is 7 yrs
Then his age, 5 yrs ago =(x-5)yrs
His age 7 years hence =(x+7)yrs
Acc. to question,
(x-5)(x+7)=28
=>x2+2x-63=0
=>x2+9x-7x-63=0
=>x(x+9)-7(x+9)=0
=>x=-9,7...
Negative can't b the answer. Therefore answer is 7 yrs
ADARSH06121:
Great
:-)
Answered by
0
Hey!!!..here is ur answer
let the present age is x
according to the ques
(x-5)(x+7)=28
x^2+7x-5x-35=28
x^2+2x-63=0
x^2+9x-7x-63=0
x(x+9)-7 (x+9)=0
(x+9)(x-7)=0
x=-9 (which is not possible)
so the value of x=7
so the present age of Ramu is 7 year
Hope it will help you ☺
let the present age is x
according to the ques
(x-5)(x+7)=28
x^2+7x-5x-35=28
x^2+2x-63=0
x^2+9x-7x-63=0
x(x+9)-7 (x+9)=0
(x+9)(x-7)=0
x=-9 (which is not possible)
so the value of x=7
so the present age of Ramu is 7 year
Hope it will help you ☺
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