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09 Jan 2019, 15:06
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Hi,
Anyone can please explain it with step by step mathematic? not by assuming numbers/putting numbers like that.
I do not whether I can explain my requirement or not , even if, anyone can understand my requirement please explain accordingly.
Thanks in advance...
Anyone can please explain it with step by step mathematic? not by assuming numbers/putting numbers like that.
I do not whether I can explain my requirement or not , even if, anyone can understand my requirement please explain accordingly.
Thanks in advance...
28 Jan 2020, 15:14
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I Don't understand
Posted from my mobile device
Posted from my mobile device
30 Jan 2020, 05:41
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Aftee a while i discover there is really easy method to understand it.
Kh=132, kh=2×2×3×11
The question asks is it integer for both of the roots.
The formula for the product of roots is c/a (k/a)
So since a is 2,in order for the sum and product to be integer we need k or h to be even. So k must a "2" and either or 3 or 11
The same process for the sum which we need another 2.
So if k=22 then the product of the roots is 11 (1×11)
The formula becomes (2x-11)(x-1)
Either way we will always have root that needs to be divided to be integer, but since we do not have. The answer is B
Posted from my mobile device
Kh=132, kh=2×2×3×11
The question asks is it integer for both of the roots.
The formula for the product of roots is c/a (k/a)
So since a is 2,in order for the sum and product to be integer we need k or h to be even. So k must a "2" and either or 3 or 11
The same process for the sum which we need another 2.
So if k=22 then the product of the roots is 11 (1×11)
The formula becomes (2x-11)(x-1)
Either way we will always have root that needs to be divided to be integer, but since we do not have. The answer is B
Posted from my mobile device
