Question

3) Calcule
a) √25+√16 =
b)√9-√49 x4² + 2³ =​

Answer 1

Resposta:

$\sqrt{25} + \sqrt{16} = 5 + 4 = 9 \\ \sqrt{9} - \sqrt{49} \times 4 {}^{2} + 2 {}^{3} = 3 - 7 \times 16 + 8 = - 101$

Answer 2

$a)\sqrt{25} +\sqrt{16}$

$5+4=9$

$b) \sqrt{9} -\sqrt{49}$ × $4^{2} +2^{3}$

$3-7$ × $16 + 8$

$3 - 112 +8$

$-109 + 8$

$-101$