Respuesta :

[tex](r-q)^2=r^2-2rq+q^2[/tex]

Explanation

remember the rule to expand the square of a binomial

[tex](a-b)^2=a^2-2ab+b^2[/tex]

Step 1

apply the rule,

let

a=r

b=q

replace

[tex]\begin{gathered} (a-b)^2=a^2-2ab+b^2 \\ (r-q)^2=r^2-2rq+q^2 \end{gathered}[/tex]

I hope this helps you

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