Question

A)Calculati:
1)√2-(-2√2)+(-√2)-(+3√2)=
2)4√3-(2√3+5√3=
3)-(-√5)-(2√5-7√5)
4)√2-(-3√2+√2)+(6√2-9√2)=
B)
1)3-2√2+5√2-3
2)2√2-3√3+8√3-4√2
3)2+3√5-3-2√5
4)√2+4√2-2√5-√3√5
C)
1)7√3-√12
2)√8+5√2
3)√48-√12

Answer 1

1)r2+2r2-r2-3r2=-r2
2)4r3-2r3+5r3=7r3
3)r5-2r5+7r5=6r5
4)r2+3r2-r2+6r2-9r2=0
1)3r2
2)-2r2+5r3
3)-1+r5
4)5r2
1)7r3-2r3=5r3
2)2r2+5r2=7r2
3)2r12-r12=r12