Question

quanto é (X+1)² + (X+3)² ?

Answer 1

Olá!

(x+1)² + ( x+3)²

aplique a formula>>  (a+b)² = a² + 2ab+b²

(x+1)² + (x+3)² = x² + 2.x.1+1² + (x + 3)²

                           x² + 2x + 1 + x² + 2.x.3+3²

                           x² + 2x + 1 + x² + 6x + 9

                           x² + x² + 6x + 2x + 9 + 1

                           2x² + 8x + 10      

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