samueldavis
samueldavis
22-01-2016
Mathematics
contestada
If x = -3, calculate the value of: 2x2 + x
Respuesta :
Billymkhoi
Billymkhoi
22-01-2016
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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