Question

. f(x) = 2x3 - 3x2 – 3x - 5; g(x) = 2x-5

Answer 1

Answer:

Step-by-step explanation:

f(x)=2x^3-3x^2-3x-5

g(x)=2x-5

g(x)=2x-5=0

2x=5

x=5/2

Replacing x by 5/2

f(x)=2x^3-3x^2-3x-5

f(5/2)=2×(5/2)^3-3(5/2)^2-3(5/2)-5

f(5/2)=2×5/2×5/2×5/2-3×5/2×5/2-3×5/2-5

= 125/4-75/4-15/2-5

= (125-75)/4-15/2-5

= 50/4-15/2-5

=(50-30-20)/4

=0/4

=0