Question

Simplifique os polinômios:

1) ab²+5-a-3b-ab+3a²+1
2) 2 ( xy+3 ) -x²+4-xy+5x²

3) 3a+2ab-(a+ab)-5+3ab

4) 5 (x+ xy²)+3y-(3x-2xy ²) +y

Answer 1

1) ab²+5-a-3b-ab+3a²+1  =  ab²+3a²+6-3b-ab-a

2) 2 ( xy+3 ) -x²+4-xy+5x² = 2xy+6-x²+4-xy+5x² = 4x²+10+xy

3) 3a+2ab-(a+ab)-5+3ab = 2a+ab -5+3ab = 2a+4ab-5

4) 5 (x+ xy²)+3y-(3x-2xy ²) +y = 5x+5xy²+3y-3x+2xy²+y = 7xy²+2x+4y