Question

Sabendo que A= 2a, B = 3a³ e C = 6a², Calcule

a) A.B

b) B : C

c) 2A . 2B

d) ( 5C)²

Answer 1

a) A*B= 2a*$3a^{3}$
A*B= $5a^{4}$
b)$\frac{B}{C} = \frac{3a^{3} }{6a^{2} } = \frac{a}{2}$
c) 2A*2B= 2(A*B)
2(A*B)= 2* $5a^{4}$
2(A*B)=$10a^{4}$
d)$(5C)^{2} = (5*6 a^{2})^{2}$
$(5C)^{2}= (30 a^{2})^{2}$
$(5C)^{2}=900 a^{4}$