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Anestetic [448]
3 years ago
12

Please write it down step by step :)

Mathematics
1 answer:
grandymaker [24]3 years ago
3 0

Answer:

-6

Step-by-step explanation:

Some nasty order of operations coming up.

Firstly, deal with that squared:

-12 / 3 * (-8 + 16 - 6) + 2

Simplify the bracket:

-12 / 3 * 2 + 2

Simplify -12 / 3:

-4 * 2 + 2

Simplify -4 * 2:

-8 + 2

Simplify:

-6

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Step-by-step explanation:

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Since ΔAPB and ΔAQC are equilateral triangles, this means that:

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Likewise:

\angle P\cong \angle PAB\cong \angle ABP\cong Q\cong \angle QAC\cong\angle ACQ

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Note that ∠PAC is the addition of the angles ∠PAB and ∠BAC. So:

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m\angle PAC=m\angle QAC+m\angle BAC

And by substitution:

m\angle PAC=m\angle QAB

Thus:

\angle PAC\cong \angle QAB

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\Delta PAC\cong \Delta BAQ

And by CPCTC:

PC\cong BQ

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