Final Answer
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Factor the polynomial $-3x^2+24x-42$ by it's greatest common factor (GCF): $3$
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$3\left(-x^2+8x-14\right)=0$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation -3x^2+24x+-42=0. Factor the polynomial -3x^2+24x-42 by it's greatest common factor (GCF): 3. Divide both sides of the equation by 3. Simplifying the quotients. Divide 0 by 3.