Question

find the root of 2x ² +13 - 15 =0 by quadratic formula ​

Answer 1

$\sf \color{green} \huge \huge \large \boxed {Answer} \:$ =>

$\large \huge { -\frac{3}{2}} {\color{pink}}$

or

$\huge -5$

$\sf \color{red} \large SOLUTION \:$

$= > 2 {x}^{2} + 13x + 15 = 0 \\ \\ = > 2 {x}^{2} + 10x + 3x + 15 = 0 \\ \\ = > 2x(x + 5) + 3(x + 5) \\ \\ = > (x + 5)(2x + 3) \\ \\ \\ x = - 5 \: \: \: \: \: \: \: or \: \: \: \: \: \: - \frac{3}{2}$

$\huge \color{blue} \mathbb { {hope \: it \: helps \: u \:}}$