Question

Essay question: show all work. Find the difference: (-5x^2+2x-5)-(7x^2-2x-3)

Answer 1

for the second half of the question you need to distribute the negative sign. so it becomes:
(-7x^2+2x+3)
so the full equation now is
(-5x^2+2x-5)-(-7x^2+2x-3)
Then you subtract life terms. So it is:
-5x^2-(-7x^2)=2x^2
then:
2x+2x=4x
then:
-5-(-3)=2
so it would come out to:
2x^2+4x-2

Answer 2

ok so what about the first half

Answer 3

of the equation?

Answer 4

yes does it stay the same

Answer 5

yes. the negative sign only affects the second half of the equation.

Answer 6

oh ok

Answer 7

so it thats the whole problem or is more needed to be done

Answer 8

BUT you only distribute the negative sign when its a subtraction problem, not addition.
and yes. the answer at the bottom is the full answer.

Answer 9

ok so if it is addition you leave it as it is

Answer 10

yesss. i did the equation horizontally, but it might be easier to do it vertically.
look at the problem like this\[-5x^2+2x-5\over7x^2-2x-3\]
think of the line in the middle as the line that tells you to subtract. since all the like terms are lined up it makes it easier.

Answer 11

oh ok

Answer 12

make more sense?

Answer 13

yes thanks

Answer 14

Now i have a question about another problem

Answer 15

ok shoot