Question

false statement by finding a counterexample

1. x/x=1
2. x+3)/3=x+1
3. √(x^2+16)=x+4

Answer 1

1.

If $x=0,$ then the quotient $\dfrac{x}{x}$ is undefined.

2.

Let $x=3$

$$\dfrac{3+3}{3}=2\not=4=3+1$$

3.

Let $x=3$

$$\sqrt{(3)^2+16}=5\not=7=3+4$$