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3 years ago

When using the binomial formula, which of the following is a correct step in the expansion of (x+y)4

Mathematics

1 answer:

lbvjy [14]3 years ago

4 0

X+y=4 is a correct step

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What is the value of X

sashaice [31]

Answer:

x = 7

Step-by-step explanation:

=> 9/72 = 3x-20/56

=> 9×45/72 = 3x-20

=> 27/3 = x

=> x = 7

3 0

2 years ago

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:

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

3 0

3 years ago

An equation has solutions of m= -5 and m=9. Which would be the equation?

Aliun [14]

Answer:

There could be many but one of them is

(m+5)(m-9)=0....

7 0

3 years ago

Read 2 more answers

Which expression is equivalent to -1.3 - (-1.9)

Verdich [7]

Answer:

-8-(-1)-5

Step-by-step explanation:

(Hope this helps can I pls have brainlist (crown) ☺️)

5 0

2 years ago

The formula for the circumference of a circle is c=2r,where r is the radios

Sedbober [7]

PI x diameter squared

6 0

2 years ago