gutgore
gutgore gutgore
  • 15-03-2021
  • Mathematics
contestada

Express [tex]\frac{x}{x+2} +\frac{2x}{x-4}[/tex]as a single fraction in its simplest form.

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jimrgrant1 jimrgrant1
  • 15-03-2021

Answer:

[tex]\frac{3x^2}{(x+2)(x-4)}[/tex]

Step-by-step explanation:

Before adding the fractions we require them to have a common denominator.

Multiply numerator/ denominator of first fraction by x - 4

Multiply numerator/ denominator of second fraction by x + 2

= [tex]\frac{x(x-4)}{(x+2)(x-4)}[/tex] + [tex]\frac{2x(x+2)}{(x+2)(x-4)}[/tex] ← expand and simplify numerators, leaving common denominator

= [tex]\frac{x^2-4x+2x^2+4x}{(x+2)(x-4)}[/tex]

= [tex]\frac{3x^2}{(x+2)(x-4)}[/tex]

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