Simplify algebraically

Step-by-step explanation:

divide 48 by 12

when the bases are same and they are in the form of divide , their powers are subtracted

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

the solution is 12x-6y