Question

find the square root of 7+2root10.​

Answer 1

Answer:

square root of 7+2√10

=√(7+2√10)

=√[5+2+2×√(5×2) ], we can write as 7=5+2&2√10

=2×√(5×2)

so by using ( a+b)² = a²+b²+2ab

= √[(√5) ²+(√2) ²+2√5√2

=√[(√5+√2) ²]

=√5+√2

hope it's help you

Answer 2

Answer:

thanks for the free point