Question

i am so confused x^2-4x+___-(____)^2

Answer 1

have to find number and binomial

Answer 2

i think that your supposed to find things that multiply that equal it

Answer 3

there is a method for completing the square:
step 1: make co-efficient of x as 1 (ts already 1 here)
step 2 : identify the co-efficient of x (the number besides x)
what is it here?

Answer 4

-4
?

Answer 5

that is correct.
step 3: now half it. what u get ?

Answer 6

means divide it by 2

Answer 7

-2

Answer 8

step 4: now square it, what u get ?

Answer 9

4

Answer 10

that is correct .
sorry, i mistyped step 1 as 'step 1: make co-efficient of x as 1 (ts already 1 here)'
it should be
'step 1: make co-efficient of x^2 as 1 (ts already 1 here)'

step 5 : now add and subtract 4 in x^2-4x+...
what u get ?

Answer 11

4 , x-2

Answer 12

you shouldn't just give me the answer

Answer 13

just to be sure , the question is
x^2-4x+___= (____)^2
right ?
then step 4 is the answer to the number on left

Answer 14

yes

Answer 15

thanks for your help

Answer 16

so u should follow the steps 1 through 4 for getting the number....now u know how to get binomial ?

Answer 17

yes thanks

Answer 18

welcome ^_^