Question

Find the value of: x^2 – 1 + 2(x – 5) at x= -1

Answer 1

Answer:

-12

Step-by-step explanation:

Given:

x = -1

To find :

x²-1+2(x-5)

Just put value of x in question solve and get answer.

Solution:

${x}^{2} - 1 + 2(x - 5) \\ \\ = {( - 1)}^{2} - 1 + 2( - 1 - 5) \\ \\ = 1 - 1 + 2( - 6) \\ \\ = - 12$