Question

y=8x2+4x-3 determine as raizes reais das seguintes funçoes

Answer 1

8x² +4x -3

Baskara 
Δ=b² -4ac
Δ=4²-4*(8)*(-3)
Δ=16-(-96)
Δ=16 + 96
Δ= 112
√Δ= 4√7

-b +- √Δ
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    2a

x1=((-4 +4√7)/(2*8))
x2=((-4 -4√7)/(2*8))

x1 = ((-1+√7)/(4))
x2 = ((-1-√7)/(4))