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samueldavis samueldavis
  • 21-01-2016
  • Mathematics
Answered

If x = -3, calculate the value of: 2x2 + x

Verified Answer :

Billymkhoi
Billymkhoi Billymkhoi
  • 21-01-2016

At x=-3:

2x^2+ x
= 2(-3)^2+ (-3)
= 2*9 -3
= 18 -3
= 15

The value of 2x^2+ x is 15 if x=-3~

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