Question

7/5 is the zero of 7x-5.Is it true or false

Answer 1

Answer:

7×7/5-5

=49/5-5

making denominators are same

49/5-(5/1×5/5)

49/5-25/5

16/5 which is not equal to zero

there fore,7/5 is not the zero of 7x-5

Answer 2

7/5 is not a zero of 7x - 5. It is FALSE.

Given,

7/5 is the zero of 7x-5

To Find,

Is it true or false?

Solution,

We can solve the question as follows:

It is asked that we have to find if 7/5 is the zero of the polynomial 7x - 5 or not.

The zeros or roots of a polynomial are all those values of x that make the polynomial equal to zero.

7/5 will be a zero of 7x - 5 if the result is equal to zero.

Substituing x = 7/5,

$= 7x - 5$

$= 7*\frac{7}{5} - 5$

$= \frac{49}{5} - 5$

$= \frac{49 - 25}{5}$

$= \frac{24}{5}$

Clearly, x = 7/5 does not make the polynomial equal to zero.

Hence, 7/5 is not a zero of 7x - 5. It is FALSE.