estudier
(x+1)(x+2)(x+3)(x+4) = 99 (by hand)



This Question is Closed

mukushla
Best Response
You've already chosen the best response.
2
\[t=x^2+5x\]

shubhamsrg
Best Response
You've already chosen the best response.
1
that was pure genius !

mukushla
Best Response
You've already chosen the best response.
2
ty :)

estudier
Best Response
You've already chosen the best response.
0
Enlighten me....

estudier
Best Response
You've already chosen the best response.
0
Or better, tell me what t is?

shubhamsrg
Best Response
You've already chosen the best response.
1
(x+1)(x+4)(x+2)(x+3) = 99
(x^2 + 5x +4)(x^2 + 5x + 6) = 99
=> (x^2 + 5x)^2 + 10 (x^2 + 5x) + 75 = 0
easier after that..

estudier
Best Response
You've already chosen the best response.
0
(x^2 + 5x +4)(x^2 + 5x + 6) = 99
(y1)(y+1) = 99

shubhamsrg
Best Response
You've already chosen the best response.
1
aha,,cool !

mukushla
Best Response
You've already chosen the best response.
2
ya much simpler :)

estudier
Best Response
You've already chosen the best response.
0
Yours is also a timesaver:)

estudier
Best Response
You've already chosen the best response.
0
It will work whenever there is a sequence (arithmetic) or some symmetry (like 1,5,7,11)