rebeccam19 rebeccam19
  • 22-06-2021
  • Mathematics
contestada

please please please help

please please please help class=

Respuesta :

ibnjuma443
ibnjuma443 ibnjuma443
  • 22-06-2021

Answer:

a S(-3) = 2(-3)(-3)+5(-3)-12

=18-15-12

=-9

b 2x2+5x-12=0

2x2+8x-3x-12=0

2x(x-4)-3(x+4)=0

(2x-3)(x+4)=0

2x-3=0

x=3/2

x=-4

sorry I couldn't answer the other question

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