Question

what should be added to 3+4x+6x² to get 2x²-3x+5​

Answer 1

Step-by-step explanation:

the number is X

BTP

6x²+4x+3+X=2x²-3x+5

x=2x²-3x+5-6x²-4x-3

x=-4x²-7x+2

Answer 2

Answer:

that to be added to 3+4x+6x² to get 2x²-3x+5​ is :

-4x² - 7x +2

Step-by-step explanation:

given that:

what should be added to 3+4x+6x² to get 2x²-3x+5​

let the value to be added is P

so; we get:

(3+4x+6x²) + P =  2x²-3x+5​

rearrange:

P = (2x²-3x+5​) - (3+4x+6x²)

take coefficients of common variables to one side

P = (2x²-6x²) + (-3x-4x) + (5-3)

P = (-4x²) + (-7x) +2

P =  -4x² - 7x +2

so , that to be added to 3+4x+6x² to get 2x²-3x+5​ is :

-4x² - 7x +2