5{-3.4k-7} + {3k+21}

1 answer:

8 0

The answer is −14k−14. Hope this helps.

You might be interested in

bezimeni [28]

What is the rest of the question?

6 0

3 years ago

svet-max [94.6K]

Answer:

the answer is 12.7, you add four plus 8.7

6 0

3 years ago

galben [10]

Answer:

4 (14.14=142=28)

Because 14 in 7 times-table, 142 in 7 times-table and 28 in 7 times-table.

8 0

4 years ago

swat32

Answer: is 11 hours.

6 0

4 years ago

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:

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

3 0

4 years ago