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4 years ago

Which equation applies the associative property of multiplication?

Mathematics

2 answers:

nekit [7.7K]4 years ago

6 0

Associative property of multiplication

Answer

−5/12⋅(6/5⋅1/3)⋅92=(−5/12⋅6/5)⋅(1/3⋅9/2) 

Trust me i took the test

qwelly [4]4 years ago

3 0

associative property of multiplication

answer
−5/12⋅(6/5⋅1/3)⋅92=(−5/12⋅6/5)⋅(1/3⋅9/2)

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Sonja [21]

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B is 6.

Step-by-step explanation:

We are trying to find a value for $B$ such that:

$2x^2+4xy-48y^2=2(x+By)(x-4y)$ is true for every $x,y$ .

So let's choose $x=0,y=1$ :

$2(0)^2+4(0)(1)-48(1)^2=2(0+B(1))(0-4(1))$

$2(0)+0-48=2(B)(-4)$

$0-48=-8B$

$-48=-8B$

Divide both sides by -8:

$\frac{-48}{-8}=B$

$6=B$

$B=6$

Note: I didn't want to choose y to be 0 because the value of B would disappear from the equation. So you should be able to have chosen any x and y except for y=0 to solve the equation for B.

Check:

So let's check and use foil to multiply out the right hand side.

$(x+6y)(x-4y)$