(x+6)(x−6)=x^2+cx+d
Find the values for integers c and d that makes the following equation true.

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- anonymous

(x+6)(x−6)=x^2+cx+d
Find the values for integers c and d that makes the following equation true.

- schrodinger

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- anonymous

no

- anonymous

- anonymous

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## More answers

- xapproachesinfinity

foil the left side and equate

- anonymous

my b didnt see u

- anonymous

soo how would tht go im still trying to get familiar with it

- xapproachesinfinity

(x+6)(x-6)=x^2-36

- xapproachesinfinity

you know that (a+b)(a-b)=a^2-b^2 yes ?

- anonymous

wait where u get 32 from

- xapproachesinfinity

difference of squares do you remember that formula?

- anonymous

uhhhhhhhhhhh maybe:/

- xapproachesinfinity

no may be yes or no

- anonymous

nope

- xapproachesinfinity

ok let's go slow then
can you distribute (a+b)(a-b)

- anonymous

yes

- xapproachesinfinity

ok go ahead

- anonymous

a^2-b^2

- xapproachesinfinity

ok what about (x+6)(x-6)

- anonymous

x^2-16

- xapproachesinfinity

where did 16 come from?

- anonymous

6+6 ohhh 6^2 soo x^2-6^2

- xapproachesinfinity

does 6+6=6^2?

- anonymous

no brain fart my b

- xapproachesinfinity

and 6+6=12 not 16?

- xapproachesinfinity

what is 6x6

- anonymous

36

- xapproachesinfinity

ok! do you know that 6^2 is the same as 6x6

- anonymous

yes

- xapproachesinfinity

then why did you tell me 6+6=6^2?

- anonymous

didnt mean to i ment to say x^2-6^2

- xapproachesinfinity

ok so x^-6^2=...

- anonymous

u mean \[x ^{2}-6^{2}\]

- xapproachesinfinity

yes

- xapproachesinfinity

so \[x^2-6^2=x^2-36\] yes?

- anonymous

(x+6)(x−6)

- anonymous

damn back at beginning

- xapproachesinfinity

yes that's what we started with
\[(x+6)(x-6)=x^2-6^2=x^2-36\]

- anonymous

ok thats better now i know where 36 came from

- xapproachesinfinity

so we have now \[x^2-36=x^2+cx+d \]

- xapproachesinfinity

do you know what coefficients mean?

- anonymous

2 pairs right

- xapproachesinfinity

no

- xapproachesinfinity

why are doing this if you don't any idea of what a coefficient mean?
did you not study this ?

- anonymous

dang A number or symbol multiplied with a variable or an unknown quantity in an algebraic term.

- xapproachesinfinity

ok yes that is a coef
now tell me the coefficients of this expression \[x^2+cx+d\]

- anonymous

x?

- xapproachesinfinity

well x is the variable or unknown it can't be a coefficient

- anonymous

idk

- xapproachesinfinity

the coefficient for this expression are 1, c and d

- anonymous

ok

- xapproachesinfinity

read that definition of a coefficient and see if this is true
a coefficient is a number or symbol that is multiplied to unknown
1 is multilpied to x^2
c is multiplied to x
d is multiplied to x^0 (hidden unknown )

- xapproachesinfinity

ok if you understand the concept what are the coefficients of this one x^2-36

- anonymous

yes its true

- anonymous

uhhhh x,2,36

- xapproachesinfinity

incorrect

- xapproachesinfinity

x is unknown 2 is a power not a coeff
36 is good but you missed - sign

- anonymous

hmmmk

- xapproachesinfinity

go watch some tutorial videos about this you need to wok on this before you try this problem

- anonymous

ight

- xapproachesinfinity

i could give you the answer but no point in that if you don't got why it is the correct one
first get the basics and then go to this level of problem

- xapproachesinfinity

https://www.youtube.com/watch?v=T9vz755kd20

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