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2 years ago

Perform the indicated operation.(3x - 4)2

Mathematics

2 answers:

pashok25 [27]2 years ago

8 0

Answer:

6x-8

Step-by-step explanation:

you multiply 2*3x=6x then 4*2=8

therefore 6x-8=(3x-4)2

uysha [10]2 years ago

3 0

Answer:

Step-by-step explanation:

The first step is solving (3x-4)2 is the distributive property.

(3x)2+(-4)2=

6x+-8 and that is your answer

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Virty [35]

B. 180cm3

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For the first one multiply:
3 x 8 x 5 = 120

Then multiply:
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3 years ago

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irga5000 [103]

Answer:

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Step-by-step explanation:

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2 years ago

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2 years ago

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faltersainse [42]

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3 years ago

Solve 2csc^2x-2cscx-1=0 <br> for 0° ≤ x ≤ 360°

umka21 [38]

Answer:

Step-by-step explanation:

2 csc²x-2 csc x-1=0

$\frac{2}{sin^2x} -\frac{2}{sin x} -1=0\\multiply~by~sin^2x\\2-2sin~x-sin^2x=0\\sin^2x+2sinx-2=0\\sin ~x=\frac{-2 \pm\sqrt{2^2-4*1*(-2)} }{2*1} \\=\frac{-2 \pm\sqrt{4+8} }{2} \\=\frac{-2 \pm\sqrt{4*3} }{2} \\=\frac{-2 \pm2\sqrt{3} }{2} \\=-1\pm\sqrt{3} \\|sin~x| \le ~1\\so~sin~x=-1+\sqrt{3} \\sin~x=\sqrt{3} -1\\x=sin^{-1}(\sqrt{3} -1) \approx 47.06^\circ,180-47.06\\or~x=47.06^\circ,132.94^\circ$

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2 years ago