Question

решите уравнение:
(5z - 3)²- 9z² = 0

Answer 1

(5z - 3)²- 9z² = 0

25z²-30z+9-9z²=0

16z²-30z+9=0

D=900-576=324

x=(30+-18)/32

x1=3/2

x2=3/8