Question

find the value of t if the value of 3x^2+5x-2t equals to 8 when x=-1​

Answer 1

Answer:

-5

Step-by-step explanation:

X = - 1

3(-1)²+5(-1)-2t = 8

3(1)-5-2t=8

3-5-2t=8

-2-2t=8

-2t=8+2

-2t=10

t = - 5

Answer 2

Answer:

3x^2 + 5x -2t = 8 when x= -1

Step-by-step explanation:

3(-1)^2 +5(-1) -2t = 8

3(1) +5(-1) -2t = 8

3 + (-5) -2t = 8

3 - 5 -2t = 8

-2 -2t = 8

-2t = 8 + 2

-2t = 10

-t = 10 ÷ 2

-t = 5

t = -5