Question

Subtração de polinômios
A ) ( 5×2 -4×+7 ) - (3×2+7×-1 ) =
B ) ( 6×2-6×+9 ) - ( 3×2+8×-2 ) =
C ) ( 7×-4y-1 ) - ( 2×-2y+5 ) =
D ) ( 4×-y-1 ) - (9×+y+3 ) =

Answer 1

Resposta:

a)2x²-11x+8

b)3x²-14x+11

c)5x-2y-6

d)-5x-2y-4

Explicação passo-a-passo:

A) 5x²-4x+7-(3x²+7x-1)

=5x²-4x+7-3x²-7x+1

=5x²-3x²-4x-7x+7+1

=2x²-11x+8

b) 6x²-6x+9-(3x²+8x-2)

=6x²-6x+9-3x²-8x+2

=6x²-3x²-6x-8x+9+2

=3x²-14x+11

c) 7x-4y-1-(2x-2y+5)

=7x-4y-1-2x+2y-5

=7x-2x-4y+2y-1-5

=5x-2y-6

d) 4x-y-1-(9x+y+3)

=4x-y-1-9x-y-3

=4x-9x-y-y-1-3

=-5x-2y-4