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Rewrite as equivalent rational expressions with denominator (3x-8)(x-5)(x-3)

Rewrite as equivalent rational expressions with denominator (3x-8)(x-5)(x-3)-example-1
User Nelini
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we have the expression


(4)/(3x^2-23x+40)

Rewrite as equivalent rational expressions with denominator (3x-8)(x-5)(x-3)

In this problem

3x^2-23x+40=3(x-5)(3x-8)

so


(4)/(3x^2-23x+40)=(4)/(3\mleft(x-5\mright)\mleft(3x-8\mright))

Multiply by (x-3)/(x-3)


(4)/(3(x-5)(3x-8))\cdot((x-3))/((x-3))=(4(x-3))/(3(x-5)(3x-8)(x-3))

Part 2

we have the expression


(9x)/(3x^2-17x+24)

we have that

3x^2-17x+24=3(3x-8)(x-3)

so


(9x)/(3x^2-17x+24)=(9x)/(3\mleft(3x-8\mright)\mleft(x-3\mright))=(3x)/((3x-8)(x-3))

Multiply the expression by (x-5)/(x-5)


(3x)/((3x-8)(x-3))\cdot((x-5))/((x-5))=(3x(x-5))/((3x-8)(x-3)(x-5))

User Caram
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