Question

me ajudem ..

a) 2x² - 10x = 0
.....
B ) 5y² + 20 y = 0

Answer 1

a) 2x² - 10x = 0
x(2x - 10) = 0
x = 0
2x - 10 = 0
2x = 10
x = 10 / 2
x = 5

b) 5y² + 20y = 0
y (5y + 20) = 0
y = 0
5y + 20 = 0
5y = -20
y = -20 / 5
y = -4