The two roots a + sqrt b and a - sqrt b are called conjugate radicals.
<u>Solution:</u>
Given that the two roots a + sqrt b and a - sqrt b are called ______ radicals.
Now let us write the each of the given two radicals in mathematical form.
So, first radical ⇒ a + sqrt b ⇒
[ since sqrt means square root]
Now second radical ⇒ a - sqrt b ⇒ 
We have to find the relation between 
Now, if observe
is conjugate of 
[ where radical is eliminated]
Hence, the two roots a +sqrt b and a- sqrt b are called conjugate radicals
C I think but please mark me as Brainiest
Thanks for your question!
We know the third angle in the triangle is 65 because it is a linear pair. We also know that all the angles in a triangle adds up to 180. So:
4k + 5 + 6k + 10 = 180 - 65
10k + 15 = 115
10k = 100
k = 10
Hope this helped!