Question

2 si 4 urgenttttt plssss​

Answer 1

2)

a = 2 + 4 + .. +288 - 144

= 2(1 + 2 + .. + 144) - 144

= 2×144×145 : 2 - 144

= 144×145 - 144

= 144(145 - 1)

= 144×144

= 144²

= 20736

√20736 = 144

√(36 + 12√81) - √(30² - 24²) + 100·√0,0256 =

= √(36 + 12·9) - √(30 - 24)(30 + 24) + 100·0,16

= √(36 + 108) - √(6×54) + 16

= √144 - √324 + 16

= 12 - 18 + 16

= 10