3 years ago

Please help due tomorrow

1 answer:

7 0

What are you trying to figure out? to find the mean you add ALL the numbers up and divide by 24. not sure what you’re solving for though, just assuming.

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3 years ago

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Archy [21]

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2 years ago

Help please Factorise x²-x-56 its due in 4 minutes

Iteru [2.4K]

Answer:

(x-8)(x+7)

Step-by-step explanation:

using quadratic formula we have

x= $\frac{-b+-\sqrt{b^{2}-4*a*c}}{2*a}$

we have:

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so we have:

x=(-(-1)+-sqrt(1^1-4*(1)*(-56)))/(2*1)

x=1+-sqrt(1-4*(-56))/(2)

x=(1+-sqrt(225))/2

x=(1+-15)/2

so we have the roots:

x1=(1+15)/2 =8

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so the answer is (x-8)(x+7)

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