Question

3 x² – 5x and - x²+2x+5

Answer 1

$\huge\underbrace\mathbf\pink{Answer}$

$adding \: both$

$3 {x}^{2} - 5x + ( - {x}^{2} + 2x + 5) \\ 3 {x}^{2} - 5x - {x}^{2} + 2x + 5 \\ 3 {x}^{2} - {x}^{2} - 5x + 2x + 5 \\ 2 {x}^{2} - 3x + 5$

Answer 2

$\Large\bf\orange{Question:}$

$\bf{Add:~3x^{2}-5x~~and~~-x^{2}+2x+5}$

$\Large\bf\orange{Answer:}$

$\tt{~~~~~~~~(3x^{2}-5x)+(-x^{2}+2x+5)}$

$\tt{: \longrightarrow 3x^{2}-5x-x^{2}+2x+5}$

$\bf{Collecting~the~like~terms~we~get:}$

$\tt{~~~~~~~~(3x^{2}-x^{2})+(-5x+2x)+5}$

$\tt{: \longrightarrow {\orange{\underline{\boxed{\bf 2x^{2}-3x+5}}}}}$