Question

1)operações com expressões algébricas a(4x²-3+xy)+(3y-xy+2x²)-(xy-x²)

 

B)3/5x²y-2zh)+(1+2zh+2/5x²y)-(x²y+1)

Answer 1

a)

 

$(4\text{x}^2-3+\text{xy})+(3\text{y}-\text{xy}+2\text{x}^2)-(\text{xy}-\text{x}^2)$

 

$=4\text{x}^2-3+\text{xy}+3\text{y}-\text{xy}+2\text{x}^2-\text{xy}+\text{x}^2$

 

$=6\text{x}^2-\text{xy}+3\text{y}-3$