Question

calcule
a)P(X)=2X^4-3X^2+X-1 para X=2

b) P(x)=-x^3+4x-2x para x=-1

Answer 1

a) p(x) = 2x⁴-3x²+x-1

p(2)= 2. 2⁴-3.2²+2-1

p(2)= 2.16-3.4+2-1

p(2)= 32 -12 +2 -1

p(2)= 20+2-1

p(2)= 21





b)p(x)=-x³+4x-2x

p(-1)= - (-1)³+4.(-1)-2.(-1)

p(-1)= - (-1) -4+2

p(-1)= +1-4+2

p(-1)= - 1