Question

Simplify the following expression.

(2x)(7xy) + (3x2)(7y)

A. -7x^2y
B. 35x^2y^2
C. 35x^2y
D. 35xy

Answer 1

@Kristinelizabeth

Answer 2

When it says (3x2), do you mean 3x^2, or literally just (3x*2) or (3x2)?

Answer 3

^2 srry

Answer 4

i say C

Answer 5

my session is about to time out.....

Answer 6

No problem :)
\[(2x)(7xy)+(3x^2)(7y)\]
Remember PEMDAS; you always solve () first. However, since there's nothing in the (), we can assume they just mean multiplication. This is more important than addition, so we solve it first...
\[14x^2y+21x^2y\]

Answer 7

So sorry just saw that your session's about to time out.

Answer 8

They have the same units, so 14+21=35
35x^2y

Answer 9

\[35x^2y\]

Answer 10

Ty!!

Answer 11

C is your answer

Answer 12

You were right :)

Answer 13

No problem :) Any other questions?