Question

Simplify the following expression: (5x^2 + 3x + 4) − (2x^2 + 5x − 1). If the final answer is written in the form Ax^2 + Bx + C, what is the value of A? Only enter the numeric value.

Answer 1

do the first step: distribute the -1 and drop the parens

Answer 2

ok

Answer 3

5x^2+3x+4-2x^2+5x-1

Answer 4

when you have a -1 in front of parens like in
-1*(2x^2 + 5x − 1)

you have to multiply each term by -1.

Answer 5

all 3 terms inside the parens get multiplied by -1

Answer 6

so -2x^2-5x+1

Answer 7

yes, along with the other stuff

Answer 8

what do you have so far ?

Answer 9

5x^2+3x+4-2x^2-5x+1

Answer 10

now the question asks
Ax^2 + Bx + C, what is the value of A?

so all you care about for this question is the x^2 terms
you have
5x^2 take away 2 x^2
how many x^2 do you have left ?

Answer 11

3x^2

Answer 12

so the answer is A= ?

Answer 13

3x2

Answer 14

A is their "code" for number in front of x^2

Answer 15

3

Answer 16

do i just put 3

Answer 17

if you had to, could you find B ?

and yes, they only want 3 as the answer. they say
**what is the value of A? Only enter the numeric value.***

Answer 18

k thanks a ton

Answer 19

could you find B ?

Answer 20

yea

Answer 21

sweet i just got a 100 thanks

Answer 22

because you should be learning how to do the question... the final answer is not as important as learning how to get to the answer.

Answer 23

yea true

Answer 24

and if this part is confusing, then later on they pile more stuff on, and you have to know this part to do the next part...

Answer 25

which is how people get in trouble... this miss an idea (this stuff isn't *that* hard), but then everything after gets harder to do, and then they give up.

so try to learn each step as well as possible.

Answer 26

*they miss an idea