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Vereinfache

a

ax+xa+xa+2x\sf a-x+x-a+x-a+2x

b

2xyy+a+2y+y2\sf 2xy-y+a+2y+y^2

c

14a(7+2a)\sf -14a-(-7+2a)

d

14a(72a)\sf -14a-(7-2a)

e

2x(3x+1)\sf 2x(3x+1)

f

2x(3x1)\sf 2x(3x\cdot1)

g

x3x7\sf x^3\cdot x^7

h

(1)(x3)2\sf (-1)\left(x^3\right)^2

i

(x3)2\sf \left(-x^3\right)^2

j

(3x1)(5x22x)\sf \left(3x-1\right)\left(5x^2-2x\right)

k

(uvw2)(uw+v2)\sf \left(uv-w^2\right)\left(uw+v^2\right)

l

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

m

7x2[xx(3x+1)]\sf 7x^2-\left[x-x\left(3x+1\right)\right]

n

(3a+b)2\sf \left(3a+b\right)^2

o

(23a)2\sf \left(\frac23-a\right)^2

p

(23a)2\sf \left(\frac23a\right)^2

q

x(x1)(x+3)x2(1+x)\sf x\left(x-1\right)\left(x+3\right)-x^2\left(1+x\right)

r

10(x25)30,8(6x0,8)\sf 10\left(x-\frac25\right)^3-0,8\left(6x-0,8\right)