A box contains 2 red marbles, 3 green marbles, and 3 blue marbles. if we choose a marble, then another marble without putting th
2 answers:
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Answer:
Make use of the fact that as long as and
:
.
.
.
Step-by-step explanation:
Assume that and
.
Make use of the fact that and
to rewrite the given expression as a combination of
and
.
.
Since :
.
Substitute this equality into the expression:
.
By the Pythagorean identity, . Rearrange this identity to obtain:
.
Substitute this equality into the expression:
.
Again, make use of the fact that to obtain the desired result:
.
