Question

Simplify: (3x + 12) (3x - 12).

Answer 1

would that give me the answer

Answer 2

Are you familiar with the FOIL method ?

Answer 3

no

Answer 4

I do not understand it please help me!!!!

Answer 5

guys pleaaase !

Answer 6

F -first
O - outside
I - inside
L - last

(3x + 12)(3x - 12)
F - multiply first terms in each set -- 3x * 3x = 9x^2
O - multiply outside terms -- 3x * -12 = -36x
I - multiply inside terms -- 12 * 3x = 36x
L - multiply last terms -- 12 * -12 = -144

now put it all together
9x^2 - 36x + 36x - 144
combine like terms
9x^2 - 144 (the x's cancel each other out)

Do you understand ?

Answer 7

any questions ?

Answer 8

yes I understand thank you!!!! how about this? Solve: 2(x - 3) + 2(x - 7) = 40

Answer 9

2(x - 3) + 2(x - 7) = 40
2x - 6 + 2x - 14 = 40
4x - 20 = 40
4x = 40 + 20
4x = 60
x = 60/4 = 15

Answer 10

that answer does not appear here the answers that appear are:x = 12.5
x = 15
x = 5
no solution
infinitely many solutions

Answer 11

x = 15

Answer 12

oooooo ok youre really smart thank you Simplify: (x + 9) (x + 8).
Answer x2 + 17x + 72
x2 + 72x + 17
x2 + 17
x2 + 72

Answer 13

im having a really hard time with algebra!

Answer 14

Thats the FOIL method

(x + 9)(x + 8)
x^2 + 8x + 9x + 72
x^2 + 17x + 72

Answer 15

is this the foil method too?? Simplify: (4b + 3) (2b - 5).
Answer 8b2 - 14b - 15
8b2 + 9b - 15
8b2 + 6b + 15
8b2 - 15

Answer 16

yes it is the FOIL method...you wanna try it...I will walk you through it

Answer 17

Simplify: (3x - 8) (2x - 2).
Answer 6x2 + 16
6x2 - 22x + 16
6x2 - 16x + 16
6x2 - 6x - 16

Answer 18

Simplify: (x - 1)(x2 + 10x + 4).

Answer 19

wat?

Answer 20

x^3 + 9x^2 - 6x - 4

Answer 21

the (3x - 8) (2x - 2) is the FOIL method

Answer 22

Simplify: (4b + 3) (2b - 5).
Answer 8b2 - 14b - 15
8b2 + 9b - 15
8b2 + 6b + 15
8b2 - 15

Answer 23

Simplify: (3x - 8) (2x - 2).
Answer 6x2 + 16
6x2 - 22x + 16
6x2 - 16x + 16
6x2 - 6x - 16

Answer 24

lets do this one together...
(4b + 3)(2b - 5)
First -- 4b * 2b = ?

Answer 25

5

Answer 26

no.....4b * 2b ?
do you know how to do this

Answer 27

whats 4 * 2 and b * b ?

Answer 28

I don't know!!

Answer 29

i need the answers i don't understand this!

Answer 30

(4b + 3)(2b - 5)
8b^2 - 20b + 6b - 15
8b^2 - 14b - 15

Answer 31

(3x - 8)(2x - 2)
6x^2 - 6x - 16x + 16
6x^2 - 22x + 16

Answer 32

how about Simplify: (3x - 8) (2x - 2).
Answer 6x2 + 16
6x2 - 22x + 16
6x2 - 16x + 16
6x2 - 6x - 16

Answer 33

just did it

Answer 34

thank you how about Simplify: (3x - 8) (2x - 2).
Answer 6x2 + 16
6x2 - 22x + 16
6x2 - 16x + 16
6x2 - 6x - 16

Answer 35

I already did that one...check above

Answer 36

Simplify: (x - 1)(x2 + 10x + 4).
Answer x3 + 10x2 + 4x - 1
x3 + 9x2 - 6x - 4
x3 + 10x2 + 4x - 4
x3 + 9x2 - 6x - 1

Answer 37

x^3 + 9x^2 - 6x - 4

Answer 38

Multiply: 5xy(2x - y)
Answer 10xy - 5xy
10x2y - 5xy2
10x2 - 5xy + 25y2
10x2 - xy + y2

Answer 39

5xy(2x - y)
10x^2y - 5xy^2

Answer 40

Simplify: 2x(4x2 - 3x - 9)
Answer 8x2 - 3x - 9
8x2 - 6x - 18
8x3 - 6x2 - 18x
8x3 - 3x2 - 9x

Answer 41

I am sorry but I have to go now...good luck

Answer 42

thank you !!!!

Answer 43

your welcome