Question

Alguém me ajuda??por favor

Answer 1

e)9t⁶+12t³-12wt³-16w

f)((9x+20)/15)*((9x-20)/15)

(81x²-180x+180x-400)/225

(81x²-400)/225

2)

a) a²-a3-a3+9+10a

a²+4a+9

b)x²+x²+2xy-2xy+2xy-2xy+2y²+2y²

2x²+4y²

c) t²+tw+tw+w²-t²-w²

2tw

3)

4x²+2xb+2xb+b²-(x²-xb-xb+b²)

3x²+6xb