Question

resuelve las siguientes expresiones
$4a {}^{2} + ( - 9a {}^{2} ) + (7a + 2a$
$8 \times {}^{2} + 3y {}^{2} + 5 \times {}^{2} - ( + 3y {}^{2} )$
$5a {}^{2} b5 + 2ab4 - ( + 7a {}^{2} b5) + 4ab4$
$4 \times {}^{2} + 3 \times {}^{2} - ( - 7 \times {}^{2} ) + y3$
​

Answer 1

Respuesta:

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Explicación paso a paso:

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