Question

calcule
a) √2+3√2-2√2
b)√2-3√2-2√2
c)√5-3√5+5√5
d)√32+3√2-√8​

Answer 1

Resposta:

a) 2√2 + 3√2 - √2 =  2+3-1√2 = 4√2

b)√2-3√2-2√2= -5.65685424949

c)√5-3√5+5√5= 5√5 - 3√5 =  √5(5 - 3) =  2√5.

d)√32+3√2-√8​= $\sqrt 2^{2}.2^{2} .2^{2} +3\sqrt{2} -\sqrt 2^{2}.2$

$\sqrt 2^{2}.\sqrt 2^{2}.\sqrt{2} +3\sqrt{2} -\sqrt 2^{2} .\sqrt{2}$

$4.\sqrt{2}+ 3\sqrt{2} -2\sqrt{2}$

$7.\sqrt{2} - 2 \sqrt{2}$

$5\sqrt{2}$