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

CLEAR CHECK

6fg3+4−4f2g2+f3g−12

6fg3+2f(2fg)+4f2g−10

6fg3+5f2g2+f3g−7

6f3g3+7f2g2+4f3g3−10fg

Step-by-step explanation:

An expression is said to be like, if there are only constants term in it, otherwise degree of variables in two distinct terms are same.Starting from option (1)

1. As, 4 and -12 are like terms, they are combined to get  -8.

2. As, 2 f( 2 f g) and  are like terms, so they can be combined to get

.3. as,there are no like terms, so, we cannot simplify this expression.→→→Correct Option,This expressions Cannot be simplified by combining like terms

4. As,  are like terms.They can be combined to get a unique term.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

a. she will receive a refund of $278.

step-by-step explanation: