Question

${3x}^{2} + 2(x + 2) - 3x(2x + 1)$
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Answer 1

Answer:

$3 {x}^{2} + 2(x + 2) - 3x(2x + 1) = 0\\ 3 {x}^{2} + 2x + 4 - 6 {x}^{2} - 3x = 0\\ - 3 {x}^{2} - x + 4 = 0 \\ 4 = 3 {x}^{2} + x \\ 0 = 3 {x}^{2} + x - 4$