Question

step by step btado brainlist answer karduga ​

Answer 1

Answer:

-x²

Step-by-step explanation:

3x² + 5x² -9x²

8x² - 9x²=

-x²

Answer 2

Step-by-step explanation:

$\huge\underline\blue{Answer}$

${3x}^{2}+{5x}^{2}+({-9x}^{2})$

$={8x}^{2}+({-9x}^{2})$

$={8x}^{2}-{9x}^{2}$

$={-x}^{2}$

Hope it help you