Question

Sendo A(x)= x2 _ 1 e B(x)= 2x2 + 7x - 4

Calcule:

a) A(x) + B(x)

b) B (x) _A (x)

c) A (x) . B (x)

Answer 1

a) x²-1+2x²+7x-4 = 3x²+7x-5
b) 2x²+7x-4-x²+1 = x²+7x-3
c) (x²-1)*(2x²+7x-4) = 2x^4+7x³-6x²-7x+4