(8+t)^3 -6 pls explain

t^3+24t^2+192t+506

Step-by-step explanation:

Let's simplify step-by-step.

(8+t)3−6

Distribute:

=t3+24t2+192t+512+−6

Combine Like Terms:

=t3+24t2+192t+512+−6

=(t3)+(24t2)+(192t)+(512+−6)

=t3+24t2+192t+506

=t3+24t2+192t+506

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18