Question

Multiply and simplify: (5y + 7)(2y + 3)
10y2 + 21
10y2 + 29y + 21
10y2 + 10
10y2 + 7y + 21

Answer 1

Follow the FOIL method! First, Outer, Inner, Last

Answer 2

i got the firt one as the answer im i right

Answer 3

Let me check :)

Answer 4

No sorry, that's not correct, do you want me to show you how to get it?

Answer 5

yea

Answer 6

Ok, so first here's the equation:
(5y + 7)(2y + 3)
FOIL: First, Outer, Inner, Last.
So now, what's 5y times 2y?

Answer 7

10y

Answer 8

Tip: Whenever you multiply a variable times a variable, the variable becomes squared: example: x times x equals x^2, 5x times x equals 5x^2.

Answer 9

(also, if you look at your answers, you can see there is no "10y" in any of the final answers)

Answer 10

so its 10y2

Answer 11

wats the second step

Answer 12

is it 7x3

Answer 13

yes sorry, my computer froze

Answer 14

no wait I'm sorry! It's 5y times 3

Answer 15

what's 5y times 3?

Answer 16

15

Answer 17

wats next

Answer 18

Right 15y
So here's what you have:
10y^2 + 15y
Now, you multiply 7 times 2y, what's that equal?

Answer 19

14y

Answer 20

Right! What I like ot do is put the like terms under each under:
10y^2 + 15y
+ 14y
NOW multiply 7 times 3!

Answer 21

thats 21

Answer 22

Right! So here's what you have!
10^2 + 15y
+ 14y + 21
+_________________

Now add like terms

Answer 23

29

Answer 24

29 what?

Answer 25

29y

Answer 26

RIGHT! So what do we have all together?

Answer 27

Multiply and simplify: (8m − 2)(2m + 3)
16m2 − 6
16m2 + 6
16m2 + 24m + 6
16m2 + 20m − 6

i got te 3rd one as the answer im i right

Answer 28

Wait wait wait! We didn't even finish the first one yet!

Answer 29

Do you know what the answer is for the first one?

Answer 30

YEAH IT WAS THE SECOND ONE

Answer 31

Right!

Answer 32

SO DID I GET THIS ONE RIGHT

Answer 33

No I'm sorry you didn't. Are you writing this down on paper and solving it or doing it in your head? Paper can help you see what you're doing also try not to go too fast!

Answer 34

IM WRITEIN IT DOWN IM GETIN STUCK

Answer 35

It's ok, please stop shouting though. Show me what you did please, the same way I showed you :)

Answer 36

i did 8m times 2m which got me 16m^2

Answer 37

right..keep going

Answer 38

than i 8m times 3 which got me 24

Answer 39

24 what?

Answer 40

24m

Answer 41

right, you must NEVER forget the variables that could make you get the wrong answer. What's next?

Answer 42

this is where i got confused but i did 7 times 2y which got me 14y

Answer 43

Alright, there's where you made a mistake.
it's supposed to be -2 times 2m not 7 times 2y

Answer 44

and thats -4m

Answer 45

Right! So now you have what?

Answer 46

im s

Answer 47

im stuck

Answer 48

Hey, I have to go sorry!