Question

2.
Efetue:
a) a³(a²+ 6)²
b) (x + 1)² – x(x - 2)
c) (b + 2) + (b + 1)² – (b − 1)²
me ajudem preciso por favor preciso mandar ainda hoje​

Answer 1

a)

${a}^{3} (a {}^{2} + 6) {}^{2}$

$a {}^{3} \times (a {}^{4} + 12a {}^{2} + 36)$

$a {}^{7} + 12a {}^{5} + 36a {}^{3}$

b)

$(x + 1) {}^{2} - x(x - 2)$

$x {}^{2} + 2x + 1 - x {}^{2} + 2x$

$4x + 1$

c)

$(b + 2) + (b + 1) {}^{2} - (b - 1) {}^{2}$

$b + 2 + (b + 1) {}^{2} - (b - 1) {}^{2}$

$b + 2 + 2 \times 2b$

$b + 2 + 4b$

$5b + 2$