Question

If x=-1 Find its value
2x²-x-2​

Answer 1

2x² - x - 2

At x = - 1

2 ( - 1 ) ² - ( - 1 ) - 2

2 + 1 - 2

3 - 2

Answer ➡ 1

Answer 2

$\huge{\underline{\underline{\sf{\red{Question:-}}}}}$

If x = -1, find the value of : 2x² - x - 2.

$\huge{\underline{\underline{\sf{\red{Solution:-}}}}}$

2x² - x - 2

2 ( -1 )² - ( -1 ) - 2

2 ( 1 ) + 1 - 2

2 + 1 - 2

3 - 2

1

Therefore, the value of 2x² - x - 2 when x = -1 is 1.

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