Question

OBLICZ : Wzory skróconego mnożenia

A (x-5)2 =

B (2x+3)2 =

C (x-7)(7+x) =

D (-x+5) 2 =

E (X-1/2)2 =

F -(3-2x) =

G (x-3)2-2x =

H (x+8)(8-2x) =

I (x-2y)2 =

J (-x-y)2 =

K (3+2z)2 =

L (6-2y)2 =

M (3-y)2 =

N (-x+5)(-5+x) =

O (y-2)2 =

P -(x+y)2 +y2 =

R 2x-(x-5)2 =

S (6-y)2-6y2 =

T (3-y)2+5y =

U -2y* (y-2)2 =

W 3x+5(x-2)2 =

X 6y+(x+2)2 =

Y x-(3-5x)2 =

Z 6x+5(x+1)2 =

Answer 1

A (x-5)2 =x²-10x+25

B (2x+3)2 =4x²+12x+9

C (x-7)(7+x) =x²-49

D (-x+5) 2 =x²-10x+25

E (X-1/2)2 =x²-x+1/4

F -(3-2x) =-3+2x

G (x-3)2-2x =x²-6x+9-2x=x²-8x+9

H (x+8)(8-2x) =8x-2x²+64-16x=-2x²-8x+64

I (x-2y)2 =x²-4xy+4y²

J (-x-y)2 =x²+2xy+y²

K (3+2z)2 =9+12z+4z²

L (6-2y)2 =36-24y+4y²

M (3-y)2 =9-6y+y²

N (-x+5)(-5+x) =5x-x²-25+5x=-x²+10x-25

O (y-2)2 =y²-4y+4

P -(x+y)2 +y2 =-(x²+2xy+y²)+y²=-x²-2xy-y²+y²=-x²-2xy

R 2x-(x-5)2 =2x-(x²-10x+25)=2x-x²+10x-25=-x²+12x-25

S (6-y)2-6y2 =36-12y+y²-6y²=-5y²-12y+36

T (3-y)2+5y =9-6y+y²+5y=y²-y+9

U -2y* (y-2)2 =-2y(y²-4y+4)=-2y³+8y²-8y

W 3x+5(x-2)2 =3x+5(x²-4x+4)=3x+5x²-20x+20=5x²-17x+20

X 6y+(x+2)2 =6y+x²+4x+4

Y x-(3-5x)2 =x-(9-30x+25x²)=x-9+30x-25x²=-25x²+31x-9

Z 6x+5(x+1)2 =6x+5(x²+2x+1)=6x+5x²+10x+5=5x²+16x+5

Answer 2

a)2x-10

b)4x+6

c)-49

d)-2x+10

e)2x-1

f)2x-3

g)2x-6-2x=-6

h)8x-2+64-16x=-8x-2+64=2(-4x-+32)

i)2x--4y

j)-2x-2y=-2(x+y)

k)6+4z

l)12-4y=4(-y+3)

m)6-2y

n)-+5x-25+5x

o)-4+-2y

p)---2+

r)2x--25+10x

s)36--12y-6

t)9+-6y+5y

u)-2y*+4-4y

w)3x+5+20-20x

x)6y++4+4x

y)x-9-25+30x

z)6x+5+5+10x