Q. Solve the quadratic by factoring.3x2−11x−6=−4xAnswer: x=
Move Terms to One Side: Move all terms to one side of the equation to set the equation to zero. 3x2−11x−6=−4x becomes 3x2−11x+4x−6=0, which simplifies to 3x2−7x−6=0.
Identify Coefficients: Identify a, b, and c in the quadratic equation3x2−7x−6.a=3, b=−7, c=−6.
Find Multiplying Numbers: Find two numbers that multiply to a∗c (3∗−6=−18) and add up to b (−7).The numbers −9 and 2 multiply to −18 and add up to −7.
Split Middle Term: Rewrite the quadratic equation by splitting the middle term using the numbers found in Step 3. 3x2−9x+2x−6=0.
Factor by Grouping: Factor by grouping.Group the first two terms and the last two terms: (3x2−9x)+(2x−6)=0.Factor out the common factors: 3x(x−3)+2(x−3)=0.
Factor Common Binomial: Factor out the common binomial factor (x−3).(3x+2)(x−3)=0.
Set Factors Equal: Set each factor equal to zero and solve for x.3x+2=0 or x−3=0.For 3x+2=0, x=−32.For x−3=0, x=3.
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