1) (x-5)^2=3 2) x^2=(√6+2√5)^2-4√30

Question

1) (x-5)^2=3
2) x^2=(√6+2√5)^2-4√30

Answer 1

1) (x - 5)² = 3
x - 5 = √3              x - 5 = - √3
X₁ = 5 + √3            X₂ = 5 - √3
2) x² = (√6 + 2√5)² - 4√30
x² = 6 + 4√30 + 20 - 4√30
x² = 26
X₁  = √26            X₂  = - √26