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McGraw Hill Glencoe Algebra 2, 2012

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McGraw Hill Glencoe Algebra 2, 2012 View details

Practice Test

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Exercise 23 Page 53

Substitute 23 for x and - 2 for y into the given expression.

- 3/8

Practice makes perfect

To evaluate the given expression for x = 23 and y=- 2, we will substitute these values into the expression and simplify as much as possible.

3(x+y)/4xy^2

x= 2/3, y= - 2

3 ( 23+( - 2))/4( 23)( - 2)^2

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Simplify

a+(- b)=a-b

3( 23- 2)/4( 23)(- 2)^2

a = 3* a/3

3( 23- 63)/4( 23)(- 2)^2

Subtract fractions

3(- 43)/4( 23)(- 2)^2

Calculate power

3(- 43)/4( 23)(4)

▼

Multiply

DenomMultFracToNumber

3 * a/3= a

- 4/4( 23)(4)

MoveLeftFacToNum

a*b/c= a* b/c

- 4/4(2)3(4)

Multiply

- 4/83(4)

MoveRightFacToNum

a/c* b = a* b/c

- 4/8(4)3

Multiply

- 4/323

▼

a/b/c= a * c/b

a/b/c= a * c/b

- 4(3)/32

Multiply

- 12/32

a/b=.a /4./.b /4.

- 3/8

MoveNegNumToFrac

Put minus sign in front of fraction

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