Question

PORFAVOR AYUDA CON LAS ECUACIONES
a) 5a3 - 2a3
b) x + 2-x2 +2x +x2
c) (7x2-x)-(4x2 +2x)
d) 3(x2-1)+2(x-1)

Answer 1

b) x+2−1 x2+2x+x2

x+2−1x2+2x+x2

3x+2−1 x2+x2

3x+2−1x2+x2

3x+2

c)(7x2−x)−1(4x2+2x)

(7x2−x)−1(4x2+2x)

(7x2−x)−4x2−2x

(7x2−x)−4x2−2x

(7x2-x)-4x2-2x(7x2−x)−4x2−2x

7x2−x−4x2−2x

7x2−x−4x2−2x

3x2−x−2x

3x2−3x

d)3(x2-1)+2(x-1)

3(x2-1)+2(x-1)

3x2−3+2(x−1)

3x2−3+2x−2

3x2−5+2x

3x2+2x−5

la primera no pude responderla perdon :(