Subtract (3x3 - 2x2 - 6x) - (4x3 - 5x2 + 3x). A) -x6 - 7x4 - 3x2 B) -x3 - 7x2 - 3x C) -x3 - 3x2 - 9x D) -x3 + 3x2 - 9x

For this case we must simplify the following expression:

By definition of the law of signs of multiplication we have:

Then, rewriting the expression:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

Option D

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.