Question

FISA DE LUCRU
1. Să se calculeze

Answer 1

a) x²+4+4x

b)x²+1-2x

c)9x²+5-6rad5

d)18+6+6rad12= 24+12rad3

e) 9+3x-3x-x²= -x² +9

f) 4a²+2ab-2ab-b²= a4²-b²

g) 16x²+8xy-8xy-4y²= 16x²-4y²

h)(4+x²)(4+2x-2x-x²)= 16-4x²+4x²-x⁴= -x⁴+16

i)x²-xrad3 +xrad3 -3= x²-3

j) (x²-9)+x²-4x+4= 2x²-4x -5

k)x⁴+9x²+16+6x³+8x²+24x