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Please Who Can Help Me Solve This ? - Education - Nairaland

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Please Who Can Help Me Solve This ? by Tolulopefinest(m): 12:23pm On Jan 16, 2022
If three times a number is decreased by 25,the result is equal to its square less by 35.find the number.
Re: Please Who Can Help Me Solve This ? by matrix199(m): 12:36pm On Jan 16, 2022
Let y represent the number
Let ^2 represent square(power of 2).
3 x y - 25 = y^2 - 35
3y - 25 = y^2 - 35
move the terms at the left to the right
y^2 - 3y - 35 + 25 =0
y^2 - 3y - 10 = 0
y^2 - 5y + 2y - 10 =0
y(y - 5) + 2(y - 5) =0
(y - 5) (y + 2) = 0
if y - 5 = 0, then y = 5..
or if y + 2 = 0, then y = - 2..
Thus, y is either 5, or -2. You can take this to the bank!
Re: Please Who Can Help Me Solve This ? by Tolulopefinest(m): 7:51pm On Jan 16, 2022
matrix199:
Let y represent the number
Let ^2 represent square(power of 2).
3 x y - 25 = y^2 - 35
3y - 25 = y^2 - 35
move the terms at the left to the right
y^2 - 3y - 35 + 25 =0
y^2 - 3y - 10 = 0
y^2 - 5y + 2y - 10 =0
y(y - 5) + 2(y - 5) =0
(y - 5) (y + 2) = 0
if y - 5 = 0, then y = 5..
or if y + 2 = 0, then y = - 2..
Thus, y is either 5, or -2. You can take this to the bank!


Wow...Thanks boss. I'm really grateful. God bless you

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Re: Please Who Can Help Me Solve This ? by matrix199(m): 8:02pm On Jan 16, 2022
Tolulopefinest:



Wow...Thanks boss. I'm really grateful. God bless you
He has, that's why i'm able to solve it. You're welcome lad!

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