Question

( 2 x ^ { 2 } - 5 x + 7 ) + ? = ( x ^ { 2 } + 9 x - 13 )

Answer 1

Answer:

$- {x}^{2} + 14x - 20$

Step-by-step explanation:

$sol {}^{n}$

$2x {}^{2} - 5x + 7 + ? = {x}^{2} + 9x - 13$

$= >? = ( {x}^{2} + 9x - 13) - (2 {x}^{2} - 5x + 7)$

$= > ? = {x}^{2} + 9x - 13 - 2 {x}^{2} + 5x - 7$

$= > ? = - {x}^{2} + 14x - 20$