Question

2sqr72+sqr32

9x8 plus 4x8

2sqr3 x sqr8 + 2xsqr8

=8sqr8

Answer 1

Poor presentation. Each new line should have an equal sign in front. You lost the square root operation in the second line. Secondly, where did the 2 go? Ahhh, it came back in the third line.

Hope you see my point.

2√72 + √32
= 2√36 √2 + √16 √2
= 12√2 + 4√2
= 16√2