Question

Найдите значение выражения:1)0.7√100-1\3√36=2)√16*√0,25+√5³-4=3)3√0,81-√9²+12²=4)(√11)²-√1,44=5)(2√13)²- (5√8)²=

Answer 1

1)5
2)-2+5корней из5
3)137.7
4)-1
5)-148

Answer 2

1) 0.7√100 - 1/3√36

√100 = 10 √36 = 6

0.7 * 10 - 1/3 * 6 = 7 - 2 = 5

2) √16 * √0.25 + √5³ - 4

√16 = 4 √0.25 = 0.5 √5³ = √(5 * 5 * 5) = 5√5

4 * 0.5 + 5√5 - 4 = 2 + 5√5 - 4 = -2 + 5√5

3) 3√0.81 - √9² + 12²

√0.81 = 0.9 √9² = 9 12² = 144

3 * 0.9 - 9 + 144 = 2.7 - 9 + 144 = 137.7

4) (√11)² - √1.44

(√11)² = 11 √1.44 = 1.2

11 - 1.2 = 9.8

5) (2√13)² - (5√8)²

(2√13)² = 4 * 13 = 52 (5√8)² = 25 * 8 = 200

52 - 200 = -148