Question

Solve (z + 6)2 = 5

{−6±5‾√}

{6±5‾√}

{5‾√±−6}

{−6+5‾√,6−5‾√}

Answer 1

9514 1404 393

Answer:

(a) -6±√5

Explanation:

(z +6)^2 = 5 . . . . . given

z +6 = ±√5 . . . . . take the square root

z = -6 ±√5 . . . . . . subtract 6