Respuesta :

Officialalehpeter

Answer:

21

Step-by-step explanation:

This is a substitution question,we are to substitute a given value in place of a certain letter

So let's solve

2x^2-x

And since x is given to be -3

So let's substitute

2(-3)^2-(-3)

2(9)-(-3)

18+3

21

So the final answer is 21

amna04352

Answer:

21

Step-by-step explanation:

2x² - x

2(-3)² - (-3)

2(9) + 3

18 + 3

21