3 years ago

I need help ASAP please

1 answer:

Vilka [71]3 years ago

3 0

Answer:A -3,6

Step-by-step explanation: Substitue the answers in and they work out

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Simora [160]

Answer:

4\pm\sqrt{19}

Step-by-step explanation:

Move everything to left side

$x^{2} -8x -3 =0$

Now to solve this square equation we need to find Descriminant

$D=b^{2} -4ac=64+12=76$

As Descriminant D is greater than 0 then we have 2 solutions which we can calculate by this formula

$x_{1,2}=\frac{-b\pm\sqrt{D}}{2a} =\frac{8\pm2\sqrt{19}}{2}=4\pm\sqrt{19}$

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Verizon [17]

B would be your answer

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