Factor the expression by grouping. First, the expression needs to be rewritten as 8x^2+ax+bx-9. To find a and b, set up a system to be solved.

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Since ab is negative, a and b have the opposite signs. Since a+b is negative, the negative number has greater absolute value than the positive. List all such integer pairs that give product -72. 18x2-21x-4 Final result : (3x - 4) • (6x + 1) Step by step solution : Step 1 :Equation at the end of step 1 : ((2•32x2) - 21x) - 4 Step 2 :Trying to factor by splitting the middle term ...
6x2-21x-9 Final result : 3 • (2x2 - 7x - 3) Step by step solution : Step 1 :Equation at the end of step 1 : ((2•3x2) - 21x) - 9 Step 2 : Step 3 :Pulling out like terms : 3.1 Pull out ...
8x2-21x-15 Final result : 8x2 - 21x - 15 Step by step solution : Step 1 :Equation at the end of step 1 : (23x2 - 21x) - 15 Step 2 :Trying to factor by splitting the middle ax ...
x2-21x-11 Final result : x2 - 21x - 11 Step by step solution : Step 1 :Trying to factor by splitting the middle term 1.1 Factoring x2-21x-11 The first term is, x2 its coefficient ins ...
displaystyle18x^2-21x+6=3left(2x-1 ight)left(3x-2 ight) Explanation:The quadratic formula is an all purpose method that will allow the factorization of any type of ...
x2-21x-2=0 Two solutions were found : x =(21-√449)/2=-0.095 x =(21+√449)/2=21.095 Step by step solution : Step 1 :Trying to factor by splitting the middle term 1.1 Factoring ...
More Items     Factor the expression by grouping. First, the expression needs to be rewritten as 8x^2+ax+bx-9. To find a and b, set up a system to be solved.
Since ab is negative, a and b have the opposite signs. Since a+b is negative, the negative number has greater absolute value than the positive. List all such integer pairs that give product -72.
Quadratic polynomial can be factored using the transformation ax^2+bx+c=aleft(x-x_1 ight)left(x-x_2 ight), where x_1 and x_2 are the solutions of the quadratic equation ax^2+bx+c=0.
All equations of the form ax^2+bx+c=0 can be solved using the quadratic formula: frac-b±sqrtb^2-4ac2a. The quadratic formula gives two solutions, one when ± is addition and one when it is subtraction.

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Factor the original expression using ax^2+bx+c=aleft(x-x_1 ight)left(x-x_2 ight). Substitute 3 for x_1 and -frac38 for x_2.  