Question

factor x^2-2x-3 whats the answer

Answer 1

what is the answer?

Answer 2

yea

Answer 3

what two numbers multiply to be 3 and add to be 2?

Answer 4

i take it you are done with the other question we were working on?

Answer 5

@amistre. what is the greatest common factor of 275?

Answer 6

id say 275 :)

Answer 7

well i think that the question doesn't make sense, does it?

Answer 8

because the word "common" means that there must be more than one

Answer 9

the term common is redundant in it i agree

Answer 10

no it is not redundant. math eschews verbiage, so no redundant words

Answer 11

mii choices is a.(x-3)(x+1) b. (x-1)(x-2) c.(x+3)(x-1) d.(x-2)(x+1)

Answer 12

simple point i am trying to make is that you cannot ask for the greatest common factor of
\[40\times 5+14\times 5+5\] it makes no sense

Answer 13

we get to problems like this: x^2-2x-3 :and the kids dont understand what a factor or a product is.

4 * 3 = 12

4 and 3 are factors of 12
12 is the product of 4*3

Answer 14

if you have choices; multiply them together to see which one matches

Answer 15

you cannot ask for the greatest common factor of
\[40x+14x+x\] and say that the answer is x

Answer 16

so question makes no sense at all

Answer 17

lol ... x may or may not be greatest; but in that case it is common

Answer 18

it is not! x is the greatest common factor of
\[40x,14x,\text{and }x\]

Answer 19

the clues in your problem suggest that we are subtracting and the bigger number is negative; so id go with a

Answer 20

any more than 5 is the greatest common factor of 275

Answer 21

x^2 -2x -3
^ ^
^ subtraction
^
bigger factor gets the negative

id say "a" is the best bet