Question

what should be subtracted from3x²-6x-4to get-5x²+9+7x​

Answer 1

Answer:

3x²-6x-4+x=-5x²+7x+9

x=-5x²+7x+9-(3x²-6x-4)

x=-8x²+15x+13

please mark as brainliest

Step-by-step explanation:

Answer 2

Answer:

-8x²+13x+13

Step-by-step explanation:

-5x² +7x +9 ---1

3x²  -6x   -4 ---2

-------------------

-8x²+13x+13           [subtracting eqn 1 and 2]

-------------------