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## Answers

__if left side plus + then = right side - minus__

__so, in same way if left side square of some no. then= right side its√ square root.__

*I hope you understood..........*

*next*

*1. (2s-1)² = 225 |*

*rough work*

*=>*

*2s - 1 =*

*√225 | as you know 15 × 15 = 225*

*=> 2s-1 = 15 |*

*and to find s: 2s - 1= 15*

*2s = 15 + 1*

*s= 16 ÷ 2*

*= 8*

*similarly the next one..............*

*2. (5 + 7)² = 289 here, |*

*rough work*

*| 5+7 = 12*

*|*