Question

Reduzindo os termos semelhantes da expressão 5²−3+2−4−7², temos como resposta: ?????

Answer 1

• 1°-  Passo

     $\boxed{\begin{array}{lr} \boxed{\begin{array}{lr}5^2 \end{array}} \ \ e \ \ \boxed{\begin{array}{lr} -7^2 \end{array}} \end{array}}$

     $\boxed{\begin{array}{lr} 5^2=5.5=25 \end{array}}$

     $\boxed{\begin{array}{lr} -7^2=-7\ .\ -7=-49 \end{array}}$

     $\boxed{\begin{array}{lr} \boxed{\begin{array}{lr}5^2=25 \end{array}} \ \ e \ \ \boxed{\begin{array}{lr} -7^2=-49 \end{array}} \end{array}}$

     $\boxed{\begin{array}{lr} 25-3+2-4-49= \ ? \end{array}}\\\boxed{\begin{array}{lr} 27-56 \end{array}}\\\boxed{\begin{array}{lr} -29 \ \ \checkmark \end{array}}$

      Resposta correta;

      -29

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