Underroot 5+ Under root 20+ Under root 45
Answers
Answered by
0
Answer:
We first simplify
√
20
and
√
45
terms by prime factorisation:
√
20
=
√
2
2
⋅
5
=
2
√
5
√
45
=
√
3
2
⋅
5
=
3
√
5
The expression can now be written as:
√
20
−
√
5
+
√
45
=
2
√
5
−
√
5
+
3
√
5
=
√
5
+
3
√
5
=
4
√
5
Similar questions