Question

Me ajudem pfvr URGENTE. ​

Answer 1

4) letra d

5) letra c

4)

A = -x³-x²+x-1

B = -x³+x²+x-1

A+B = (-x³-x²+x-1)+(-x³+x²+x-1)

-x³-x³-x²+x²+x+x-1-1

-2x³+2x-2

5) (x-2y)(x-2y) = x²-2xy-2xy+4y² = x²-4xy+4y²

❤️❤️ Boa tarde!!!

08/09