Question

If x=-2 is a root of the polynomial p(x)=-2x^4-7x^3-3x^2-tx-10....
find the value of t..
please do it quickly. ​

Answer 1

Answer:

-1

Step-by-step explanation:

p(-2)=0

-2(16) - 7(-8) -3(4) +2t -10 =0

-32+56-12+2t-10=0

2t=-2

t=-1

Answer 2

Answer:

t = -1

Step-by-step explanation:

x = 2

2x⁴ - 7x³ - 3x² - tx - 10 =. 0

2(2)⁴ - 7(2)³ - 3(2)² - t(2) - 10 = 0

2(16) - 2(8) - 2(4) - t(2) - 10 = 0

32 - 16 - 8 - 2t - 10 = 0

-2 - 2t = 0

-2t = 2

-t = 2/2

-t = 1

t = -1

Hope you get your answer