Question

Which is value is euquivalent to x-7/x+7?
a) -7
b) -1
c) 7
d) 1

Answer 1

To find the equivalent value of x-7/x+7, simplify the expression by multiplying the numerator and denominator by the conjugate of x+7. The simplified expression is x^2 - 7x.

This correct answer is none of the above.

Step-by-step explanation:

To find the value that is equivalent to x-7/x+7, we can simplify the expression by multiplying both the numerator and the denominator by the conjugate of x+7, which is x-7. This will eliminate the denominator and result in a simplified expression.

Now, distribute the x to both terms in the numerator:

(x * x) - (x * 7)

Simplify further:

x^2 - 7x

Therefore, the simplified expression that is equivalent to x-7/x+7 is x^2 - 7x.

This correct answer is none of the above.