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Sladkaya [172]
3 years ago
5

Simplify into a binomial

Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

x-5

Step-by-step explanation:

Consider the expression

\dfrac{3x^3-15x^2+15x-75}{3x^2+15}

Its numerator 3x^3-15x^2+15x-75 is equivalent to

3x^3-15x^2+15x-75\\ \\=3x^2(x-5)+15(x-5)\\ \\=(x-5)(3x^2+15)

Therefore, given expression can be rewritten as

\dfrac{(x-5)(3x^2+15)}{3x^2+15}=x-5

Note that 3x^2+15\neq 0, so we can divide the numerator and the denominator by non-zero expression 3x^2+15.

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