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Mathematics 11 Online
OpenStudy (anonymous):

factor x^2+18=9x

OpenStudy (shamil98):

x^2 -9x + 18 = 0 (x-6)(x-3) = 0 you need to think of it as this. what values add up to -9? what values mutliplied give + 18? and then match that to find it out .

OpenStudy (anonymous):

@shamil98 why would u do that

OpenStudy (shamil98):

To factor it.

OpenStudy (anonymous):

So ur factors are 3 and 6

OpenStudy (anonymous):

@shamil98

OpenStudy (shamil98):

-6 and -3.

OpenStudy (shamil98):

x^2 - 9x + 18 = 0 -6 * -3 = 18 -6x - 3x = -9x Which is why. its that.

OpenStudy (anonymous):

But my answer key only has (3,6) thats why im confused

OpenStudy (shamil98):

Those are the solutions.

OpenStudy (shamil98):

(x-3)(x-6) = 0 To solve for x. just set the equations to zero x -3 = 0 x = 3, x - 6 = 0 x = 6,

OpenStudy (anonymous):

it has 3= x

OpenStudy (anonymous):

whatever I'll just color in that 3,6 answer if they are the solutions

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