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Show that the statement: p : If x is a r...

Show that the statement: `p :` If `x` is a real number such that `x^3+x=0,\ t h e n\ x\ i s\ 0` is true by (i)Direct method

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(i) Direct Method: Let us assume that ‘q’ and
‘r’ be the statements given by q: x is a real number such that `x^3 + x = 0`
r: x is 0.
The given statement can be written as:
if q, then r.
Let q be true.
...
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