Mathematics: What is the factored form of 343 + x^6? A.(7 - x)(49 + 7x + x^2) B.(7 + x)(49 – 7x + x^2) C.(7 - x)(49 + 7x^2 + x^4) D. (7+ x2)(49 - 7x^2 + x^4)

What is the factored form of 343 + x^6? A.(7 - x)(49

ericlawton

05.10.2020

x ≠ - 5

Step-by-step explanation:

Given

f(x) = $\frac{x-3}{x+5}$

The denominator of f(x) cannot be zero as this would make f(x) undefined.

Equating the denominator to zero and solving gives the value that x cannot be.

solve : x + 5 = 0 ⇒ x = - 5 ← excluded value

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