Question

Which of these expressions CANNOT be simplified by combining like terms?

Answer 1

That would be : 6fg^3 + 5f^2g^2 + f^3g - 7....because there are no like terms

Answer 2

Answer:

The answers are :

option 1,option 3 and option 4.

Step-by-step explanation:

in first option:

$=6fg^3+4-4f^2g^2+f^3g-12$

clearly we could see that there are no like terms hence we could not simplify the expression.

in second option:

$=6fg^3+2f(2fg)+4f^2g-10$

this expression could also be written as:

$=6fg^3+4f^2g+4f^2g-10\\\\=6fg^3+8f^2g-10$

in third option:

$6fg^3+5f^2g^2+f^3g-7$

as there are no like terms hence the expression can't be simplified.

in fourth option:

$=6f^3g^3+7f^2g^2+4f^3g^2-10fg$

as there are no like terms hence the expression can't be simplified.

Hence option 1, option 3 and option 4 are the answers.