How to factorise x^2 - x + 16
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How to factorise x^2 - x + 16

[From: ] [author: ] [Date: 11-05-25] [Hit: ]
But I cant seem to find the numbers, so I dont think it can be factorised.Use this site to help you:http://www.spsu.edu/math/people/Factor_a…-There is no easy way of factoring it, but you could find the quations two roots: 1/2 (1 + 3 i Sqrt(7)) and 1/2 (1 - 3 i Sqrt(7))and then setx^2 - x + 16 = (x - 1/2 (1 - 3 i Sqrt(7)))(x - 1/2 (1 + 3 i Sqrt(7)))-3x^2 - 3x + 48=3(x^2 - x + 16)then use the quadratic formula to figure it out-x^2 - x + 16x^2 - x + 1/4 - 1/4 + 16(x+1/2)^2 + 63/4cant be anymore simplified-Cannot be factorised----end of story !......
You need to get it into the format (x+a)(x+b)
So a and b have to be two numbers that when added together, they make -3 (from '-3x'), and when multiplied they make 144 (48 x 3).

But I can't seem to find the numbers, so I don't think it can be factorised.

Use this site to help you:
http://www.spsu.edu/math/people/Factor_a…

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There is no easy way of factoring it, but you could find the quations two roots: 1/2 (1 + 3 i Sqrt(7)) and 1/2 (1 - 3 i Sqrt(7)) and then set

x^2 - x + 16 = (x - 1/2 (1 - 3 i Sqrt(7)))(x - 1/2 (1 + 3 i Sqrt(7)))

-
3x^2 - 3x + 48=3(x^2 - x + 16)

then use the quadratic formula to figure it out

-
x^2 - x + 16
x^2 - x + 1/4 - 1/4 + 16
(x+1/2)^2 + 63/4
cant be anymore simplified

-
Cannot be factorised----end of story !

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this cannot be factored
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