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Mathematics 9 Online
OpenStudy (katecc379):

?

OpenStudy (katecc379):

stuck between b and a but im thinking b

OpenStudy (calculusxy):

Let me check

OpenStudy (katecc379):

okay

OpenStudy (mhchen):

Find the zeroes, where it intersects the x-axis, and that will give you an idea of what the factors of that equation should be.

OpenStudy (calculusxy):

I am trying to use factoring by grouping..

OpenStudy (will.h):

it is A actually y = -(x+3) (x-4) simplify y = (-x-3) (x-4) y = -x^2 + 4x - 3x + 12 y = -x^2 + x + 12 which is congruent to the original expression which confirms that we are correct!

OpenStudy (will.h):

if you get to simplify the rest of the options non of them will rsult the original exprssion which means A is the only correct answer

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