Question

Simplify 2x(x-1) + 5 and find its value at x= -1​

Answer 1

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Answer:

The value is 9.

Step-by-step explanation:

$= 2x(x - 1)$

$= 2( - 1)( - 1 - 1) + 5$

$= 2( - 1)( - 2) + 5$

$= 4 + 5$

$= 9$

Answer 2

Answer

= 2(-1)[(-1)-1]+5

= -2(-2)+5

= 4+5

= 9