a) 2x² + 3x – 2y3=
x= -1
y=2
b) 3x + 2y – 3=
x=3.5
y=5.5
c) 2(4x-3y) (5x+2y)=
x=3
y=2
d) 5(2x+3y) – 2(3x-2y)=
x=5
y=3
e) 2(x² – y) + 4(2x-3y)=
x=3
y=1
f) a+ 3b2 −c
___________ =
a +b + c
a=1
b=2
c=3
ayuda es urgente doy coronita
Respuestas a la pregunta
Explicación paso a paso:
a) 2x² + 3x – 2y3= 2(-1)^2 + 3.(2)= 2.1 +. 6 = 2 + 6 = 8
x= -1
y=2
b) 3x + 2y – 3= 3.(3,5) + 2.(5,5) - 3= 10,5 + 11 - 3 = 18,5
x=3.5
y=5.5
c) 2(4x-3y) (5x+2y)= 2[4(3) - 3(2)] .[5(3) + 2(2)]
x=3. = 2(12 - 6) . 5(15 + 4)
y=2. = 2.(6). 5.(19)
= 12 . 95
= 1140
d) 5(2x+3y) – 2(3x-2y)= 5[2(5) + 3(3)] - 2[3(5) - 2(3)]
x=5. = 5(10 + 9) - 2(15 - 6)
y=3. = 5(19) - 2(9)
= 95 - 18
= 77
e) 2(x² – y) + 4(2x-3y)= 2[(3)^2 - 1] + 4[2(3) - 3(1)]
x=3. = 2[9 - 1] + 4[6 - 3]
y=1. = 2(8) + 4(3)
= 16 + 12
= 28
f) a+ 3b2 −c (1) + 4(2)^2 - (3). 1 + 4 (4) - 3
___________ = ---------------------- = ----------------- =
a +b + c. (1) + (2) + (3). 6
a=1. 1 + 16 - 3. 14. 7
b=2. -------------=. -----. = -----
c=3. 6. 6. 3