Question

efetue as operacao indicada:
a)(3y2-2y-6)-(7y2+8y+5)
b)(a2-b2)+(a2-3b2-c)+(5c-2b2-a2)

Answer 1

3y^2-2y-6-7y^2-8y-5
-4y^2-12y-11

letra b
a^2-b^2+a^2-3b^2-c+5c-2b^2-a^2
a^2-2b^2+4c