Question

b squared+18b+81 factoring polynomials plzzz gcf first then factor

Answer 1

b^2 +18b +81 = ?

do you know formula (a+b)^2 = ?

Answer 2

do you can getting two numbers with sum equal 18 and product 81 ?

Answer 3

no i dont

Answer 4

one example :

a^2 +4a +4 = ? can you factorizing it ?

you need getting two numbers with sum equal 4 and product equal 4

can you get ?

Answer 5

so 2 and 2 bc. 2+2=4 and 2*2=4 than

a^2 +4a +4 = (a+2)^2

do you understand it now ?

Answer 6

courage this is easy

Answer 7

how can you make 18 from 2 numbers assumed ?

Answer 8

for example 6+12 =18 but 6*12 = 72 and you need getting product equal 81

Answer 9

any idea you dont have ? i m here to help you

Answer 10

so 8 and 10 will be right ?

Answer 11

ye it would thnx

Answer 12

no

bc. 8+10 = 18 but 8*10 = 80 and you need product equal 81

Answer 13

ik i just gave up dudei hate this i hate all math

Answer 14

dont give up bc. we here wan helping you but you need collaborate

Answer 15

its difficult

Answer 16

not is looke please than you know that a+a=18 and a*a=81 so how you get this number of a ?

Answer 17

idk im feeling dumb

Answer 18

looke please a+a=18 => 2a = 18 divide both sides by 2 so what will get a = ?

Answer 19

9?

Answer 20

exactly

so 9+9 = ?

Answer 21

18

Answer 22

very nice and 9*9 = ?

Answer 23

81

Answer 24

yes sure so now your polinom how will be factorized ?

Answer 25

looke please on the top what i ve wrote there

Answer 26

this is where its confusing me tho

Answer 27

ok. than check this please

bc. you know now that 9+9=18 and 9*9=81

you can rewriting your polinom in this form

b^2 +18b +81 = b*b +9b +9b +9*9 = ?

what can you factorizing out from these terms gruping them ?

Answer 28

19b+81...? idk

Answer 29

ok

so from first two terms you factoriz out the b and from 3rd and 4th the 9 and will get

= b(b+9) + 9(b+9) =

and now what is common factor there ?

Answer 30

b^2+9b+9b+81

Answer 31

wait please can you answer my question ?

what is common factor there b(b+9) +9(b+9) =

Answer 32

I DONT KNOW

Answer 33

(b+9) is common there and than you factoriz it out what will get ?

Answer 34

why cant u see i dont get this

Answer 35

you get (b+9)(b+9) = ?

Answer 36

no i dont this is what i get for being homeschooled until high school

Answer 37

than you know that a*a = a^2 so than (b+9)(b+9) = ?

Answer 38

@ThisGirlPretty do you can explain it more understandably please ?

Answer 39

ok. so than note b+9= x so in this case (b+9)(b+9) = x*x = ?

Answer 40

i ve wrote above that a*a = a^2 so than x*x = ?

Answer 41

Oh wait are you suppose to do 9 x 9 = ?

Answer 42

no

given b^2 +18b +81 and this polinimial you need factoriz it getting the gfc

Answer 43

sorry gcf

Answer 44

Is @XxSavageForLifexX online right now?

Answer 45

yes was here now one moment

Answer 46

but than you check he now ve go away

Answer 47

@ThisGirlPretty ty all your contribution ,collaboration

Answer 48

Anytime ! :)

Answer 49

i saing same any time i m here to help you than you like ,wan

Answer 50

Yes sir ^-^ !

Answer 51

i still dont understand this