Question

Determine as raizes (zeros) reais das funçoes; f(x)=-4x+20x-25 f(x)=x+36

Answer 1

f(x) = y
y = 
- 4x + 20x - 25 = 0
16x - 25 = 0
16x = 0 + 25
16x = 25
x = 25 ÷ 16
x = 1,5625

x + 36 = 0
x = 0 - 36
x = - 36