Question

a) x(x+y)-u(x-y)-y(y+2)=

b) 2(a²+b+ab)-3e(b+a)+3b(a-b)=

c) 16√2(√2a+√8b)=

d) -3(-3a+4b-8c)+4(-a-b-c)=

e)-4x(-2x+y-z)+y(2x-j+z)=

Answer 1

a) x(x+y)-u(x-y)-y(y+2)=x²+xy-ux+uy-y²-2y

b) 2(a²+b+ab)-3e(b+a)+3b(a-b)=2a²+2b+2ab-3be-3ae+3ab-3b²=2a²-3b²+5ab-3ae+2b-3be

c) 16√2(√2a+√8b)=16a+64-nie jestem pewien

d) -3(-3a+4b-8c)+4(-a-b-c)=9a-12b+24c-4a-4b-4c=5a-16b+20c

e)-4x(-2x+y-z)+y(2x-j+z)=8x²-4xy+4xz+2xy-jy+yz=8x²-2xy-jy+4xz+yz

 

Answer 2

a)x^{2}+xy-ux+uy-y^{2}-2y

b)2a^{2}+2b+2ab-3eb-3ea+3ba-3b^{2}

c)32a+64b

d)9a-12b+24c-4a-4b-4c=5a-16b+20a

e)8x^{2}-4xy+4xz+2xy-yj+yz=8x^{2}-2xy+4xz-yj+yz

 x^{2} to kwadrat x