Question

1) 4x-x do kwadratu x=1/2 2) 2x do kwadratu-x-(x do kwadratu+x) x=1/3 3)-(x do kwadratu+x)+(-3x do kwadratu+3x) dla x=-2

proooszee pomóżcie damm najjj ;)

Answer 1

1)  (4x-x)do kwadratu= (4*1/2 - 1/2)do kwadratu=(2-1/2) do kwadratu= 3/2 do kwadratu= 9/4=2 i 1/4

2)   2xkwadrat- x -(xkwadrat + x)= (2 *1/3)kwadrat - 1/3 -(1/3 kwadrat +1/3)=(2/3)kwadrat - 1/3-(1/9+1/3)=4/9-1/3-(1/9+1/3)=4/9-3/9-(1/9+3/9)=1/9-4/-3/9=-1/3

3)  -(x do kwadratu + x)+ (-3xkwadrat +3x)=-((-2)kwadrat+(-2))+((-3*(-2))kwadrat+3*(-2))=-(4-2)+(6kwadrat-6)=-2+(36-6)=-2+30=-28

Answer 2

1) 4 x - do kwadratu

8 - do kwadratu

7 do kwadratu = 56

 

2) 2 x do kwadratu - ( do kwadratu + )

 

x - ( x - )

- ( - )

- x ( - ) =