Question

$- 9 {x }^ {2} + 11 {x}^{2} + 3 {x}^{2} - 4 {x}^{2}$
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Answer 1

Answer:

x²

Step-by-step explanation:

-9x² + 11x² + 3x² - 4x²

rearranging

= 11x² + 3x² - 9x² - 4x²

= 14x² - 13x²

= x²

Answer 2

Answer:

$x {}^{2}$

Step-by-step explanation:

$= - 9x {}^{2} + 11x {}^{2} + 3x {}^{2} - 4x {}^{2} \\ = ( - 9 + 11 + 3 - 4)x {}^{2} \\ = x {}^{2}$

Hence the answer is x square.