Question

Find the product of (3x + 7y)2.

9x2 - 42xy + 49y2

9x2 - 49y2

9x2 + 49y2

9x2 + 42xy + 49y2

Answer 1

(3x + 7y)^2 turns into
(3x + 7y)(3x + 7y)

Do you know how to do the FOIL method ?

Answer 2

answer is D

Answer 3

FOIL -- first,outside,inside,last
(3x + 7y)(3x + 7y)
First -- multiply 1st terms in each set....3x * 3x = 9x^2
Outside-- multiply outside terms in each set...3x * 7y = 21xy
Inside -- multiply inside terms in each set...7y * 3x = 21xy
Last -- multiply last terms in each set....7y * 7y = 49y^2
now write what you got..
9x^2 + 21xy + 21xy + 49y^2
combine like terms
9x^2 + 42xy + 49y^2

Answer 4

yep...you are correct....answer D

Answer 5

thank can u help me on other questions

Answer 6

I can try...can't promise anything

Answer 7

find the product of (x - 7)2.

x2 - 14x + 49

x2 + 14x + 49

x2 - 49

x2 + 49

Answer 8

do it the same way...FOIL

(x - 7)^2 is (x - 7)(x - 7)

FOIL gives us : x^2 - 7x - 7x + 49
combine like terms
x^2 - 14x + 49

Answer 9

anything else ?

Answer 10

I am sorry but I have to go now....getting kinda late.

Answer 11

wait whats the answer

Answer 12

x^2 - 14x + 49

Answer 13

thanks

Answer 14

can u help me on one more

Answer 15

no problem :)

Answer 16

Find the product of (x + 3)2.

x2 + 6x + 9

x2 - 6x + 9

x2 - 9

x2 + 9

Answer 17

yes...I guess I can help with 1 more

Answer 18

(x + 3)^2 is the same as (x + 3)(x + 3)

using FOIL, we get : x^2 + 3x + 3x + 9
combine like terms
x^2 + 6x + 9 <== answer

Answer 19

thankuuuu

Answer 20

Find the product of (3x - 7y)2.

9x2 - 42xy + 49y2

9x2 + 42xy + 49y2

9x2 - 49y2

9x2 + 49y2

Answer 21

sure thing :)
Last one..

(3x - 7y)^2

(3x - 7y)(3x - 7y)
FOIL gives us : 9x^2 - 21xy - 21xy + 49y^2
combine like terms
9x^2 - 42xy + 49y^2 <== answer

Answer 22

good-night now :)

Answer 23

thanks wait

Answer 24

Find the product of (x + 3)(x - 3).

x2 - 6x + 9

x2 + 6x + 9

x2 + 9

x2 - 9

Answer 25

x^2 - 3x + 3x - 9
combine like terms
x^2 - 9 <== answer

Answer 26

okay i have one last one and im done

Answer 27

Find the product of (3x + 7y)(3x - 7y).

9x2 - 42xy + 49y2

9x2 + 42xy + 49y2

9x2 - 49y2

9x2 + 49y2

Answer 28

pleaseeee

Answer 29

9x^2 - 21xy + 21xy - 49y^2
combine like terms
9x^2 - 49y^2 <== your answer

Answer 30

thanks

Answer 31

no problem :)

Answer 32

goodnight to u if u r awake let me no pls i need help