3 years ago

Open to find question (mathematics)

Mathematics

1 answer:

BigorU [14]3 years ago

4 0

Answer:

its a ...............................

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Match each expression to its equivalent standard form.

Aleksandr [31]

Let's expand the products they are all in the form

$(a+b)(a-b)=a^2-b^2$

For the first one we have a=x and b=2i:

$(x+2i)(x-2i)=x^2-(2i)^2=x^2+4$

For the second one we have a=x-2 and b=2i:

$(x-2+2i)(x-2-2i)=(x-2)^2-(2i)^2 = x^2-4x+4+4=x^2-4x+8$

For the third one we have a=x+1 and b=i:

$(x+1+i)(x+1-i)=(x+1)^2-i^2=x^2+2x+1+1=x^2+2x+2$

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3 years ago

A boat travelling upstream goes 36 kilometers in 6 hours. If the return trip takes only 3 hours, what is the speed (in kilometer

mr_godi [17]

11 kilometer per hour

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3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B9%7D%20" id="TexFormula1" title=" \sqrt[3]{9} " alt=" \sqrt[3]{9} " align=

Art [367]

Answer:

$\sqrt[3]{9}= 2.08008...$

Step-by-step explanation:

I used a calculator but 9 is not a perfect cube

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3 years ago

an online media service offers video and music downloads. Each download of a song costs $1.2. Each download of a video costs 4 t

IceJOKER [234]

She can buy 26 songs after purchasing 10 videos

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3 years ago

Read 2 more answers

2 2/5 x 5/7 in simplest form

Lena [83]

Answer:

1 5/7

Step-by-step explanation:

2 2/5 x 5/7

= 12/5 x 5/7

= 12/7

1 5/7

5 0

3 years ago