Question

Multiply and simplify: –3ab3 • (–4a4b5)
A. –12a5b8
B. –12a4b15
C. 12a5b8
D. 12a4b15

Answer 1

lets take this one step at a time
what is -3 * -4 ??

Answer 2

-12

Answer 3

try again....a negative times a negative is a positive

Answer 4

nvm 12

Answer 5

correct....so that eliminates the first 2

now...
what is a * a^4 ??

Answer 6

a^5

Answer 7

correct..
when multiplying exponents with the same base, you add the exponents
so now we have 12a^5

now what is b^3 * b^5 ?

Answer 8

b^8

Answer 9

correct...leaving us with ..
12a^5b^8

questions ?

Answer 10

well 1 more

Answer 11

I can try...what ya got

Answer 12

Multiply and simplify:

3xy4z2 • 5x2yx
A. 8x4y5z2
B. 15x2y4z2
C. 15x4y5z2
D. 15(xyz)11

Answer 13

ok...start with just the numbers
what is 3 * 5 ?

Answer 14

15

Answer 15

what is x * x^2 ?

Answer 16

x^3

Answer 17

ok..I am not getting any of your answer choices
I am getting 15x^3y^5z^3

Answer 18

there exactly how they are

Answer 19

wait..I read the problem wrong...hold on

Answer 20

3 * 5 = 15
x * x^2 * x = x^4
y * y^4 = y^5
and don't forget the z^2
leaving us with :
15x^4y^5z^2

Answer 21

thx!

Answer 22

sure..sorry about the confusion :)