makeupobsession1244
makeupobsession1244 makeupobsession1244
  • 09-10-2018
  • Mathematics
contestada

Solve 2x2 + 5x = 12

a) x= 3/2 and x = −4
b) x= 2 and x= -3
c) x=-6 and x= 5
d) x= 1/2 and x= 1/3

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20johnch
20johnch 20johnch
  • 15-10-2018

2x2+5x=12, 2x+5x=7x, 12+2=14, 7x/7=14/7, x=2

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