Question

6. Simplify 2x(x-1)-5 and find its values at x= -1​

Answer 1

Answer:

-1 is the value of 2x(x-1) -5 when x = -1

Step-by-step explanation:

2x(x -1) - 5

2x² - 2x - 5                (open brackets and multiply)

put x = -1

2(-1)² - 2(-1) - 5

2(1) - (-2) - 5

2 + 2 - 5

4 - 5

-1