Question

Hola porfavor que alguien me ayude doy:
1.-Simplifica:
a) 3a – 4 + 2 – a + 5 =
b) (2x2 – x + 1) + (4 – x2 – 3x) =
c) 5 – (9x + 4) + (3 – 5x) =
d) 5x2 – (4 – x + 4x2) – x2 + 6 =

Answer 1

a) 3a – 4 + 2 – a + 5 = 2a+3

b) (2x2 – x + 1) + (4 – x2 – 3x) = 2x2-x+1+4-x2-3x=x2-4x+5

c) 5 – (9x + 4) + (3 – 5x) = 5-9x-4+3-5x=4-14x

d) 5x2 – (4 – x + 4x2) – x2 + 6 = 5x2-4+x-4x2-x2+6=x+2