3 years ago

Investigation of a cake box

Mathematics

1 answer:

Lerok [7]3 years ago

4 0

Answer:

Step-by-step explanation:

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I need to show how to find these solutions 1/4 and 3/4 by completing the square!

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See explanation, and ask for more details if unclear!

Step-by-step explanation:

The perfect square of this equation is $x^2-x+\frac{1}{4}$ , since the square would be $(x-\frac{1}{2})^2$ . 1/4=4/16, meaning that you can set up the equation in the following way:

$(x^2-x+\frac{1}{4})-\frac{1}{16}=0$

$(x-\frac{1}{2})^2=\frac{1}{16}$

Take the square root of both sides:

$x-\frac{1}{2}=\pm \frac{1}{4}$

Add 1/2 to both sides:

$x=\frac{1}{2}\pm \frac{1}{4}=\frac{3}{4}, \frac{1}{4}$ . Hope this helps!

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3 years ago

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<=>

p(a ∩ b) = p(a) + p(b) - p(a U b)

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Investigation of a cake box​

Investigation of a cake box