Question

Choose the correct simplification of (3x^3y^4z^4)(2x^3y^4z^2).
Answer
6x^6y^8z^6
5x^9y^16z^8
5x^6y^8z^6
6x^9y^16z^8

Answer 1

3r option

Answer 2

3rd*

Answer 3

Hmm.. well, look at the first coefficients; we have a 2 multiplied to a 3.
2*3=6, so #3 couldn't work

Answer 4

oh shiz i see we have to multiply

Answer 5

last option

Answer 6

well, now if we multiply x^3 * x^3, we have the same base so essentially we just add exponents:
x^(3+3)

Answer 7

ok

Answer 8

its the last option though right?

Answer 9

x^(3+3) = x^6, but there's no x^6 in the last option... so it can't be that. :P

Answer 10

first 1?

Answer 11

Yes. :)
In general, if we have:
\(\large x^a \times x^b\)
Then it is the same as \(\large x^{a+b}\)

Answer 12

k thanks :D