Question

Answer 4x to the power of 2 + 12x + 5 using the factor theorem..

Answer 1

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IT IS CORRECT 100%

Answer 2

Answer:

$4 {x}^{2} + 12x + 5 = 0 \\ = > 4 {x}^{2} + 10x + 2x + 5 = 0 \\ = > 2x(2x + 5) + (2x + 5) = 0 \\ = > (2x + 1)(2x + 5) = 0 \\ = > 2x + 1 = 0 \: and \: 2x + 5 = 0 \\ x = - \frac{1}{2} \: and - \frac{5}{2}$