Question

1)√48-4√3=....?
2)5√2-√50=....?
3)(x-3)²=...?
4)2x·(x+3)-x²=...?
5)(x-4)·(x+4)=...?

Answer 1

1)√48-4√3=
4√3-4√3=0
2)5√2-√50=
5√2-5√2=0

3)(x-3)^2=
x^2-2x•3+3^2
x^2-6x+9

4)2x•(x+3)-x^2
x•[2(x+3)-x]=
x•(2x+6-x)=
x•(x+6)

5)(x-4)•(x+4)=
x^2-4^2=
x^2-16