Question

Sendo p(x)=x^2-5x+3, obtenha o valor numérico de p para:
f) x=3/2

Answer 1

Determinar valor numérico

p(x) = x² - 5x + 3

• Para x = 3/2

p(3/2) = (3/2)² - 5.(3/2) + 3

p(3/2) = (3.3/2.2) - (5.3/2) + 3

p(3/2) = 9/4 - 15/2 + 3

p(3/2) = 9.2/4.2 - 15.4/2.4 + 4.2.3/4.2

p(3/2) = 18/8 - 60/8 + 24/8

p(3/2) = (18-60+24)/8

p(3/2) = - 18/8

p(3/2) = - 18÷2/8÷2

p(3/2) = - 9/4