Question

$(2x {}^{2} + x) - (6x + 3) = x {}^{2} + 5x$
​

Answer 1

$2 {x}^{2} + x - (6x + 3) = {x}^{2} + 5x \\ \\ \\ = > 2 {x}^{2} + x - 6x - 3 = {x}^{2} + 5x \\ \\ = > {x}^{2} - 5x - 3 = 5x \\ \\ = > {x}^{2} - 10x - 3 = 0 \\ \\ you \: know... \\ \\ d = {b}^{2} - 4ac \\ \\a = 1 \\ b = - 10 \\ c = - 3 \\ \\ d = { (- 10})^{2} - (4 \times 1 \times - 3) \\ \\ = > 100 + 12 = 112 \\ \\ \\ you \: know.. \\ \\ x = \frac{ - b + - \sqrt{d} }{2a} \\ \\ \\ x = \frac{ - ( - 10) + - \sqrt{112} }{2 \times 1} \\ \\ \\ = > \frac{10 + - \sqrt{112} }{2} \\ \\ x = \frac{10 + \sqrt{112} }{2} \\ \\ x = \frac{10 - \sqrt{112} }{2}$

please mark me brainlist ✔️