Question

4) Calcule:
a) √0 + √1 =
b) √49 - √64 =
c) 15 - √100 =
d) – 1 + √81 - √9 =
e) - √25 + √4 + √1 =
f) √400 - √900 + 2 =

Answer 1

Resposta:

Explicação passo a passo:

a) $\sqrt{0} + \sqrt{1} =0+1=1$

b) $\sqrt{49} -\sqrt{64} =7+8=15$

c) 15 -$\sqrt{100} =15-10=5$

d)

$-1+\sqrt{81} -\sqrt{9} =\\-1+9-3=\\-1-3+9=\\-4+9=+5$

e)

$-\sqrt{25} +\sqrt{4} +\sqrt{1} =\\-5+2+1=\\-5+3=-2$

f)

$\sqrt{400} -\sqrt{900} +2=\\ 20 -30+2=\\20+2-30=\\22-30=-8$