Question

Quadratic by extracting square roots
4ײ-225=0

Answer 1

this is ur required answer

Answer 2

Answer:

(2x)² - 15² = 0

(2x + 15)(2x - 15) = 0

here,

2x+15= 0

x = -15/2

or,

2x - 15 = 0

x = 15/2