Question

add 7x square - 4x + 5 and 5x square -x+9​

Answer 1

Answer:

7x^2 – 4x + 5

+5x^2 – x + 9

(–) (+) (–)

—————————

12x^2 – 3x – 4

Answer 2

$\huge\bf{\underline{\underline{{\blue{Question:}}}}}$

$\bf{Add:~7x^{2}-4x+5~and~5x^{2}-x+9}$

$\huge\bf{\underline{\underline{{\blue{Answer:}}}}}$

$\bf{~~~~~~~~~~~(7x^{2}-4x+5)+(5x^{2}-x+9)}$

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

$\bf{~~~~~~~~~~~(7x^{2}+5x^{2})+(-4x-x)+(5+9)}$

$\bf{: \implies {\blue{\underline{\boxed{\bf 12x^{2}-5x+14}}}}~~{\large{\blue{✓}}}}$