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Which shows the factors of x^3-3x^2+4x-12? A. (x^2+4)(x-3) B. (x^2-4)(x+3) C. (x^2-2)(x+6) D. (x^2+2)(x-6)
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expand each one eg B = x^2*x + 3x^2 - 4x - 12 = x^3 + 3x^2 - 4x - 12 -so its not this one can you continue with this?
try expanding A
X^3-12
X^3+4x-3x^2-12?
ok - you've multiplied x by x^2 and + 4 by -3 but how about x^2 by -3 and + 4 by x?
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right so is it A?
Right!
That was so easy. Thanks!
yea - easy when yu now how. yw
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