Question

determinati numarul natural x pentru care:a)x^2:(3^2)^2=2^2 b)196:x^2=7^4:7^2 c)6^2+x^2=10^2 c)6^2+x^2=10^2 d)32^4:5^x=(2*3^2)
1)8
2)3
3)18
4)2
5)1
coroana celui catre raspunde in 2 min.

Answer 1

a) x^2:81=4
x^2=81×4
x^2=324
x=√324
x=18

b) 196:x^2=7^2
196:x^2=49
x^2=196:49
x^2=4
x=√4
x2

c) 36+x^2=100
x^2=100-36
x^2=64
x=8

d)nu il stiu