Question

Without expanding any brackets

show how to work out the exact solutions of 25(2x+3)^2 = 16
(give the solutions)

Answer 1

(2x+3)^2 = 16/25

(2x+3) = √(16/25)

2x+3 = 4/5

2x = 4/5 - 3

x = -1 .1