Question

What must be subtracted from x² + 2x - 3 to get 2x² - 4?​

Answer 1

Answer:

hey mate!! here's your answer

Step-by-step explanation:

see just you subtract x2 + 2x -3 with 2x2-4

so the answer will be 3x2-2x+1

PLZZ MARK AS BRAINLIEST

Answer 2

Answer:

-x² + 2x + 1

Step-by-step explanation:

Let the expression to be subtracted be 'A'.

x² + 2x - 3 - A =  2x² - 4​

A = x² + 2x - 3 - (2x² - 4)

Re-arranging the terms,

A = x² - 2x² + 2x - 3 + 4

A = -x² + 2x + 1

∴ -x² + 2x + 1 must be subtracted from x² + 2x - 3 to get 2x² - 4.