6t - 20 - 32u when t = 6 and u = 1/4

8

Step-by-step explanation:

Substitute the variables for the number they represent

6(6) - 20 - 32(1/4)

Multiply

6*6 = 36

32 x .25 = 8

36-20-8

16-8

8

here given equation is 6t - 20 - 32u

value of t=6

value of u=1/4

then...

putting the value in the given equation.. we get,

=6*6-20-32*(1/4)

=36-20-8

=8

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol