3) Determine o valor numérico das seguintes expressões algébricas: a) 2x + 4 y + 12 para x = -8 e y = 3 *

b) m² + 3b -15 para m= 13 e b = 25 *

c) 4 b – 7 b² para b = -2 *

d) 3bx + 2/5 x - 2 para b=6 e x=4

can you complete your sentence? i could !

hello there!

i believe the answer is

(cot2+1)/sec2=cot2

    csc2/sec2=cot2

  (1/sin2)/(1/cos2)=cot2

  (1/sin2)(cos2/1)=cot2

  cos2/sin2=cot2

  (1/tan2)=cot2

  (cot2)=(cot2)

hope this !

hyperz ^_^

answer: the up tack or falsum is a constant symbol used to represent a logical constant denoting "false" in logic.