Question

AJUDEM POR FAVOR !
Se A = x² + 1eB = -2x² + x + 2, determine o valor de: a) A+B b) -5.B c) -2A + 3B

Answer 1

a) A+B = (x²+1)+(-2x²+x+2) = (2x²)+(x²) = 3x²
b)-5.B = -5.(-2x²+x+2) = -5.x² = 5x²
c)-2.A+3.B = -2.(x²+1)+3.(-2x²+x+2) = -2.2x²+3.x² = 4x²+3x² = 7x²