Question

Rezultat :a)3√2+√98-10(√2-1). 7la puterea 2017:7la puterea2016+3la puterea 100x3la puterea9:3la puterea108

Answer 1

$a)3 \sqrt{2} + \sqrt{98} - 10( \sqrt{2} - 1)$

$= 3 \sqrt{2} + 7 \sqrt{2} - 10 \sqrt{2} + 10$

$= 10 \sqrt{2} - 10 \sqrt{2} + 10$

$= 0 + 10$

$= 10$

$b) {7}^{2017} \div {7}^{2016} + {3}^{100} \times {3}^{9} \div {3}^{108}$

$= {7}^{2017 - 2016} + {3}^{100 + 9 - 108}$

$= {7}^{1} + {3}^{109 - 108}$

$= 7 + {3}^{1}$

$= 7 + 3$

$= 10$