Question

Simplificando a expresão:
5(a-1)+1+(a+1)(a-1)+5(a-1)sobre2

Answer 1

Olá!

5(a-1)+1+(a+1)(a-1)+5(a-1)/2

<=>5(a-1)+5(a-1)+(a+1)(a-1)+1/2

<=> (a-1)[5+5+(a+1)] +1/2

<=>(a-1)(10+a+1)+1/2

<=> (a-1)(a+11)+1/2

<=> [a^2 + 11a - a - 11] + 1/2

=> a^2 + 10a -11+1/2

=> a^2+10a-10/2

Espero ter ajudado!

Answer 2

5(a -1) +1 +(a +1)(a -1) +5(a -1)/2
5a -5 +1 +a +1(a -1) +5a -5 /2
5a -5 +1 +a +a -1 +5a -5 /2
5a +1a +5a +a -5 +1 -1 -5 /2
12a -10 /2
6a -5