Question

P &Q jika F(X)=2X³+PX²+QX-3
F(1)=0 & F(-3)=0

Answer 1

- f(1) = 2(1)^3 + p(1)^2 + q(1) - 3 = 0
           2+p+q-3=0
           p+q-1 =0 ........ (i)
- f(-3) = 2(-3)^3 + p(-3)^2 + q(-3) - 3 = 0
           -54 + 9p - 3q - 3 = 0
           -57 + 9p - 3q = 0 ......(ii)
      
eliminasi persamaan i - ii nanti dapat p dan q nya