Jika P(x) = 2X^4 – X^3 + ax^2 – X + 1 jika p(1) = 3 maka p(-1)=​

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Jika P(x) = 2X^4 – X^3 + ax^2 – X + 1 jika p(1) = 3 maka p(-1)=​

p(x)=2x⁴-x³+ax²-x+1

p(1)=3

2(1)⁴-(1)³+a(1)²-(1)+1=3

2-1+a=3

a=3-1

a=2

p(x)=2x⁴-x³+2x²-x+1

p(-1)=2(-1)⁴-(-1)³+2(-1)²-(-1)+1

=2(1)-(-1)+2(1)+1+1

=2+1+2+1+1

=7

p(-1)=7