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Topic: solve (x+2)(x+3)(x+4)(x+5)=10
Replies: 8   Last Post: Mar 28, 2008 8:00 AM

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bodinsoul

Posts: 95
Registered: 6/8/05
Re: solve (x+2)(x+3)(x+4)(x+5)=10
Posted: Mar 27, 2008 3:50 PM
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> Can anyone solve this question? I am really at a dead
> end!
>
> (x+2)(x+3)(x+4)(x+5)=10



you can write y=x^2+7x and notice that the equation looks like
(x+2)(x+5)(x+3)(x+4)=10
(y+10)(y+12)=10

so it reduces to solving two quadratic plynomials



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