Answer:
x,y
Step-by-step explanation:
it just is
x = 0.4
x = 2/ 5
4x² - 36 = 0 ⇌ (2x)² - 6² = 0 ⇌ (2x - 6)(2x + 6) = 0 ⇌ 2x - 6 = 0 or 2x + 6 = 0
⇌ x = 3 or x = -3
x=22.5 degrees
