Find LCD of Rational Expression

When adding and subtracting rational expressions, my first step should be to:

• Combine like terms in the numerators.

• Determine a Least Common Denominator.

• Factor all of the numerators and all of the denominators.

• Change the operator to multiplication and reciprocate the second fraction.

Tags

CCSS.HSA.APR.D.7

Find the LCD of the following rational numbers

2/5 and 3/10

• 10

• 5

• 15

• 20

Find the LCD of these fractions.

• (x+2)(x-2)

• (x+2)(x+1)

• (x+2)(x-2)(x+1)

• (x-2)(x+1)

Tags

CCSS.HSA.APR.D.7

Find the LCD of these fractions.

• (x+2)(x-2)

• (x+2)

• (x-2)

• (x²-4)(x+2)

Tags

CCSS.HSA.APR.D.7

• A
• B
• C
• D

Tags

CCSS.HSA.APR.D.7

What is the least common multiple of 3x² - 27 and 5x²+10x-75? HINT: Think least common denominator!

• 3(x+3)(x-3)(x+5)

• 15(x+3)(x+3)(x+5)

• 15(x+3)(x-3)(x+5)

• 5(x+3)(x-3)(x+5)

Tags

CCSS.HSA.APR.D.6

Tags

CCSS.HSA.APR.D.7

• (x+8)(x+3)

• 8x(x+2)

• (x²+3x+24)

Tags

CCSS.HSA.APR.D.7