Question

3x^2+13x+5 factorization

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Answer 1

Answer:

1) 12x 2 -15 = 11x

Solution :

12x 2 -15 = - 11x

12x 2 -15 + 11x = 0 [ add + 11x

12x 2 + 11x -15 = 0

12x 2 + 20x - 9x -15 = 0

4x(3x + 5) - 3(3x + 5) = 0

(3x + 5)(4x - 3) = 0

3x + 5 = 0 or 4x - 3 = 0

3x = - 5 or 4x = 3

x = -5/3 or x = 3/4

Solution is (-5/3,3/4)