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suter [353]
3 years ago
12

Simplifying expressions: Simplify 22-5(2x+4)

Mathematics
2 answers:
tangare [24]3 years ago
7 0

22-10x-20

=2-10x

=2(1-5x)

hope this helps.

Kisachek [45]3 years ago
4 0

Hi.

22-5(2x+4) \\ \\ \implies 22-10x-20 \\ \\ \implies -10x+22-20 \\ \\ \implies -10x +2

Hence,

The correct option is \boxed{\sf b. -10x+2}

Thanks.

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Easiest way to do this is in reverse.

γ sin(2x − α)

Angle sum/difference formula:

γ (cos α sin(2x) − sin α cos(2x))

Distribute:

γ cos α sin(2x) − γ sin α cos(2x)

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γ sin α = √3

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x = π/4 + kπ or 7π/12 + kπ

x is between -π and π, so:

x = -3π/4, -5π/12, π/4, 7π/12

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