Question

find the value of the polynomial x²-x-1 at x=-1​

Answer 1

Answer : 1

Let's see HOW?

Here,

x = -1

${x}^{2} - x - 1 \\ = ( - 1)^{2} - ( - 1) - 1 \\ = 1 + 1 - 1 \\ = 2 - 1 \\ = 1$

So, the answer is 1 .

Answer 2

Answer:

$\huge\star\underbrace{\mathtt\red{⫷❥ᴀ᭄} \mathtt\green{n~ }\mathtt\blue{ §} \mathtt\purple{₩}\mathtt\orange{Σ} \mathtt\pink{R⫸}}\star\:$

Step-by-step explanation:

☆Given=>Equation=x^2-x-1

Value at x=-1

=>x^2-x-1

=>(-1)^2-(-1)-1 (Putting x=-1)

=>1+1-1

=>2-1

=>1

☞So the value of the given equation at x=-1 is 1.

HOPE IT HELPS.