Hello!
Ignore the negative and solve the square root which is 13.
Add the negative with 13 you get -13
Special case is when it is square root of -169 then it will involved with i.
But for this question just solve it directly.
Have a great day!
A/3=7/10
21=10a
a=2.1
100a=100*2.1=210
The answer is -2.76.
Hope I Helped (=^-^=)
