Question

5x^2-4y^2 +6y-3 from 7x^2 - 4xy +8y^2 +5x-3y

Answer 1

Answer:

2X^2  - 4XY + 12 Y^2 - 9 Y -3

Step-by-step explanation:

7X^2 - 4XY +8Y^2 +5X -3Y

5X^2             -4Y^2         +6Y -3

(-)                    (+)              (-)         ( while subtracting we should change the sign)

2X^2  - 4XY   +12 Y^2     - 9 Y -3

thank you hope you understood !!