Resolva as subtrações de polinômios: a) (2x^{2} + 5x - 6) - (-2x^{2} - 6x + 7) =
b) (7x^{2} + 4x - 5) - (-3x^{3} - 5x + 6) =
c) (7x^{2} + 4x + 5) - (3x^{2} - 8x - 7) =
d) (-4x^{2} + 7x + 5) - (-2x^{2} + 6x + 4) - (3x^{2} + 4x - 5) =

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

i suppose it should be (y=2x-5)

step-by-step explanation: