Factor completely 3x3 – 21x2 – 27x

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol