Respostas

2014-05-25T22:17:54-03:00
-3r²+5rs+(-9r²-rs+6s²)-14s²+(6r²+5rs+8s²) é:
-3r²+5rs-9r²-rs+6s²-14s²+6r²+5rs+8s²
-3r²-9r²+6r²+5rs-rs+5rs+6s²-14s²+8s²
-6r²+9rs
1 5 1