Si tenemos un rectángulo en el que su base es igual a x+10 y su altura es igual a x+9, ¿cuál será la expresión algebraica correcaminos que deberá representar el área de nuestra figura?

Responder:

x² + 19x + 90

Explicación paso a paso:

Área del rectángulo = Base * Alto

Dado

Base = x + 10

Altura = x + 9

Área del rectángulo = (x + 10) (x + 9)

Área del rectángulo = x (x) + 9x + 10x + 9 (10)

Área del rectángulo = x² + 9x + 10x + 90

Área del rectángulo = x² + 19x + 90

La expresión que representa el área si la cifra es x² + 19x + 90

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