Question

aflati x care verifica egalitatea​

Answer 1

Răspuns:

Explicație pas cu pas:

a) x² : 3² = 3² => x² = 3²·3² = 81 => x₁,₂ = ± 9

b) 25²-x = 24²  => x = 25²-24² = 625-576 = 49 => x = 49

c) x : 10³ = 10⁰  => x = 10³· 10⁰  = 10³·1 = 10³ => x = 1000

d) 441 : x = 21²  <=> 441 : x = 441  => 441 = x·441 =>

x = 441:441 => x = 1

e) x - 2⁵ = 5³ => x = 5³+2⁵ = 125+32 = 157 => x = 157

f) 324:x = (3²·2)²  => 324 = x·(9·2)² => 324 = x ·18² =>

324 = x·324 => x = 324:324 => x = 1