Q. Solve the quadratic by factoring.3x2−11x=−4x−4Answer: x=
Write Standard Form: Write the quadratic equation in standard form by moving all terms to one side of the equation.Move −4x and −4 to the left side to get 3x2−11x+4x+4=0.Combine like terms to get 3x2−7x+4=0.
Identify Coefficients: Identify a, b, and c in the quadratic equation 3x2−7x+4.a=3, b=−7, c=4.
Find Multiplying Numbers: Find two numbers that multiply to a∗c (3∗4=12) and add up to b (−7).The numbers are −3 and −4 because −3∗−4=12 and −3+−4=−7.
Split Middle Term: Rewrite the quadratic equation by splitting the middle term using the two numbers found in Step 3. 3x2−3x−4x+4=0.
Factor by Grouping: Factor by grouping.Group the first two terms and the last two terms: (3x2−3x)−(4x−4)=0.Factor out the common factor from each group: 3x(x−1)−4(x−1)=0.
Factor Common Binomial: Factor out the common binomial factor (x−1).(3x−4)(x−1)=0.
Set Factors Equal: Set each factor equal to zero and solve for x.3x−4=0 or x−1=0.For 3x−4=0, add 4 to both sides to get 3x=4, then divide by 3 to get x=34.For x−1=0, add 1 to both sides to get 3x−4=00.
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