Question

a) 2 la puterea x =32
b) 3 la puterea x =81
c)9 la puterea 2·x=81la puterea4

Answer 1

a. 2 la x=2⁵⇒x=5;
b. 3 la x=3⁴⇒x=4;
c. 3 la 4x=3¹⁶⇒4x=16⇒x=4;

Answer 2

a)$2^{5}$=32 deci x = 5
b) $3^{4}$=81 deci x = cu 4
c) $9^{2*x}$=$81^{4}$ ⇒$9^{2*x}$=$9^{8}$⇒2*x=8⇒x=4