jessihogan
jessihogan
13-04-2018
Mathematics
contestada
what are the solutions to 2x^2 + 7x = 4
Respuesta :
dannielle
dannielle
13-04-2018
2x^2+7x-4=0
Δ=7^2-4*2*(-4)
Δ=49+32
Δ=81
x1=(-7+V81)/4=(-7+9)/4=2/4=1/2
x2=(-7-9)/4=-16/4=-4
the solutions:
x1= 1/2
and
x2= - 4
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