Question

add(-2x square-3x+5),(x square+5x-7),(3xsquare-5x+4)

Answer 1

Answer:

Step-by-step explanation:

( - 2x² - 3x + 5 ) + ( x² + 5x - 7 ) + ( 3x² - 5x + 4 )

= - 2x² - 3x + 5 + x² + 5x - 7 + 3x² - 5x + 4 ( ∵ + × - = - )

= ( - 2x² + x² + 3x² ) + ( - 3x + 5x - 5x ) + ( 5 - 7 + 4 ) (∵ Like terms adding )

= ( - 2x² + 4x² ) + ( - 3x ) + ( 9 - 7 ) ( ∵ 5x - 5x = 0 )

= 2x² - 3x + 2 is the answer. ( ∵ + × - = - )