3 years ago

A student simplifies the expression correctly.

1 answer:

3 0

Answer:7.51724137931

Step-by-step explanation:

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irina1246 [14]

Answer:

x^2-2x-4=0

Δ=2^2-4*1*(-4)

Δ=4+16=20

VΔ=2V5

x1= (2+2V5)/2=1+V5

the answer is D

Step-by-step explanation:

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