Question

can someone please show all the steps to find the difference: I am totally lost
(-5x^2 + 2x – 5) – (7x^2 – 2x – 3)

Answer 1

Distribute the - sign to all terms on the right parenthesis
and then add like terms

Answer 2

first rewrite without parentheses. don't touch anything in the first parentheses, just rewrite the terms
\[-5x^2+2x-5\]

Answer 3

for the second one, distribute the minus sign, i.e. remover the parentheses and change all the signs
\[– (7x^2 – 2x – 3) =-7x^2+2x+3\]

Answer 4

\[-5x^2-7x^2 +2x+ 2x -5 +3\] Quite sure you can go on from there. I just put the like terms together for you

Answer 5

this give
\[(-5x^2 + 2x – 5) – (7x^2 – 2x – 3)
\]
\[=-5x^2 + 2x – 5– 7x^2 +2x + 3
\]

Answer 6

don't skip steps or try to do this in your head. write it out on paper
now combine like terms

Answer 7

^^ and just practise, practice makes perfect.

Answer 8

so the final answer would be 5x^2 + 2x - 5- 7x^2 + 2x + 3

Answer 9

frustration, frustration frustration

Answer 10

You would have to add:
\[-5x^2-7x^2\]
\[2x+2x\]
\[-5+3\]

Hint: \[2x+2x = 4x\]

Answer 11

would that not be 4x^2 ? ?

Answer 12

\[2x + 2x \] ?

Answer 13

ok i c just the 4x

Answer 14

\[2x+2x=4x \]\[2x \times 2x = 4x^2\]

Answer 15

ok you are right thanks

Answer 16

So now just add the other terms together and let me know what you get...That should be your answer.

Answer 17

ok