Question

calculei
a) 7x³-5x²+x³-x²=

b) 9ab-5b²-6ab+b²=

c) 4xy-10xy+6-5xy=

d) 3a-(2a+6)+(7-5a)=​

Answer 1

Resposta:

Explicação passo a passo:

a.

7x³+x³-5x²-x²=

8x³-6x²

b.

9ab-6ab-5b²+b²=

3ab-4b²

c.

4xy-10xy-5xy+6=

-11xy+6

d.

3a-2a-6+7-5a=

3a-2a-5a-6+7=

-4a+1