Question

(b+9) x (b+3) explain/ check if my answer is right

Answer 1

so do i only do 9x3?

Answer 2

which is 27

Answer 3

no use this formula (a+b)(a+b)= a^2+2ab+b^2

Answer 4

no !! there is also a variable i.e b
you have to multiply this variable also

Answer 5

FOIL method

Answer 6

so it would be b^2+12b+27

Answer 7

\[\large \bf (b+9)(b+3)=b(b+3)+9(b+3)\]
\[\large \bf b^2+3b+9b+27\]
\[\large \bf b^2+12b+27\]

Answer 8

oh okay i think i get it now O.o

Answer 9

good :)

Answer 10

so for (x+2) x (x-3) i would use the same formula @mayankdevnani

Answer 11

yeah !!!

Answer 12

REMEMBER :-
\[\large \bf (a+b)(c+d)=a(c+d)+b(c+d)\]

Answer 13

@mcnabkt

Answer 14

so then its x^2+ 2b-3 ugh my brain hurts like idk if i have it right so far

Answer 15

@gorv

Answer 16

i just get confused with the a and b letters like idk

Answer 17

a,b,c,d are numbers

Answer 18

well if there are only two numbers then whats c?

Answer 19

and d?

Answer 20

c and d are variables or numbers

Answer 21

and also
a and b are variable or numbers

Answer 22

Like in your question :-