Odpowiedź:
a)
[tex]\sqrt{5}[/tex]x + [tex]\sqrt{20}[/tex] = [tex]\sqrt{80}[/tex]
= [tex]\sqrt{5}[/tex]x + [tex]\sqrt{5}[/tex] · [tex]\sqrt{4}[/tex] = [tex]\sqrt{4}[/tex] · [tex]\sqrt{20}[/tex]
= [tex]\sqrt{5}[/tex]x + [tex]2\sqrt{5}[/tex] = [tex]\sqrt{4}[/tex] · [tex]\sqrt{4}[/tex] · [tex]\sqrt{5}[/tex]
= [tex]\sqrt{5}[/tex]x + [tex]2\sqrt{5}[/tex] = [tex]4\sqrt{5}[/tex]
= [tex]\sqrt{5}[/tex]x = [tex]4\sqrt{5}[/tex] - [tex]2\sqrt{5}[/tex]
= [tex]\sqrt{5}[/tex]x = [tex]2\sqrt{5}[/tex] / : [tex]\sqrt{5}[/tex]
x = 2
b)
[tex]\sqrt{32}[/tex] + [tex]\sqrt{18}[/tex]x = [tex]\sqrt{50}[/tex]
= [tex]\sqrt{2}[/tex] · [tex]\sqrt{16}[/tex] + [tex]\sqrt{2}[/tex]x · [tex]\sqrt{9}[/tex]x = [tex]\sqrt{2}[/tex] · [tex]\sqrt{25}[/tex]
= [tex]4\sqrt{2}[/tex] + [tex]3\sqrt{2}[/tex]x = [tex]5\sqrt{2}[/tex]
= [tex]3\sqrt{2}[/tex]x = [tex]5\sqrt{2}[/tex] - [tex]4\sqrt{2}[/tex]
= [tex]3\sqrt{2}[/tex]x = [tex]1\sqrt{2}[/tex] / : [tex]\sqrt{2}[/tex]
= 3x = 1 / : 3
x = [tex]\frac{1}{3}[/tex]
c)
[tex]2\sqrt{3}[/tex]x - [tex]\sqrt{75}[/tex] = [tex]\sqrt{12}[/tex]
= [tex]2\sqrt{3}[/tex]x - [tex]\sqrt{3}[/tex] · [tex]\sqrt{25}[/tex] = [tex]\sqrt{3}[/tex] · [tex]\sqrt{4}[/tex]
= [tex]2\sqrt{3}[/tex]x - [tex]5\sqrt{3}[/tex] = [tex]2\sqrt{3}[/tex]
= [tex]2\sqrt{3}[/tex]x = [tex]2\sqrt{3}[/tex] + [tex]5\sqrt{3}[/tex]
= [tex]2\sqrt{3}[/tex]x = [tex]7\sqrt{3}[/tex] / : [tex]\sqrt{3}[/tex]
= 2x = 7 / : 2
x = [tex]\frac{7}{2}[/tex]
d)
[tex]\sqrt{6}[/tex] - [tex]2\sqrt{24}[/tex]x = [tex]\sqrt{600}[/tex]
= [tex]\sqrt{6}[/tex] - [tex]2\sqrt{4 *6}[/tex]x = [tex]\sqrt{6}[/tex] · [tex]\sqrt{100}[/tex]
= [tex]\sqrt{6}[/tex] - [tex]4\sqrt{6}[/tex]x = [tex]10\sqrt{6}[/tex]
= [tex]-4\sqrt{6}[/tex]x = [tex]10\sqrt{6}[/tex] - [tex]\sqrt{6}[/tex]
= [tex]-4\sqrt{6}[/tex]x = [tex]9\sqrt{6}[/tex] / : [tex]\sqrt{6}[/tex]
= -4x = 9 / : (-4)
x = [tex]-\frac{9}{4}[/tex]
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Odpowiedź:
a)
[tex]\sqrt{5}[/tex]x + [tex]\sqrt{20}[/tex] = [tex]\sqrt{80}[/tex]
= [tex]\sqrt{5}[/tex]x + [tex]\sqrt{5}[/tex] · [tex]\sqrt{4}[/tex] = [tex]\sqrt{4}[/tex] · [tex]\sqrt{20}[/tex]
= [tex]\sqrt{5}[/tex]x + [tex]2\sqrt{5}[/tex] = [tex]\sqrt{4}[/tex] · [tex]\sqrt{4}[/tex] · [tex]\sqrt{5}[/tex]
= [tex]\sqrt{5}[/tex]x + [tex]2\sqrt{5}[/tex] = [tex]4\sqrt{5}[/tex]
= [tex]\sqrt{5}[/tex]x = [tex]4\sqrt{5}[/tex] - [tex]2\sqrt{5}[/tex]
= [tex]\sqrt{5}[/tex]x = [tex]2\sqrt{5}[/tex] / : [tex]\sqrt{5}[/tex]
x = 2
b)
[tex]\sqrt{32}[/tex] + [tex]\sqrt{18}[/tex]x = [tex]\sqrt{50}[/tex]
= [tex]\sqrt{2}[/tex] · [tex]\sqrt{16}[/tex] + [tex]\sqrt{2}[/tex]x · [tex]\sqrt{9}[/tex]x = [tex]\sqrt{2}[/tex] · [tex]\sqrt{25}[/tex]
= [tex]4\sqrt{2}[/tex] + [tex]3\sqrt{2}[/tex]x = [tex]5\sqrt{2}[/tex]
= [tex]3\sqrt{2}[/tex]x = [tex]5\sqrt{2}[/tex] - [tex]4\sqrt{2}[/tex]
= [tex]3\sqrt{2}[/tex]x = [tex]1\sqrt{2}[/tex] / : [tex]\sqrt{2}[/tex]
= 3x = 1 / : 3
x = [tex]\frac{1}{3}[/tex]
c)
[tex]2\sqrt{3}[/tex]x - [tex]\sqrt{75}[/tex] = [tex]\sqrt{12}[/tex]
= [tex]2\sqrt{3}[/tex]x - [tex]\sqrt{3}[/tex] · [tex]\sqrt{25}[/tex] = [tex]\sqrt{3}[/tex] · [tex]\sqrt{4}[/tex]
= [tex]2\sqrt{3}[/tex]x - [tex]5\sqrt{3}[/tex] = [tex]2\sqrt{3}[/tex]
= [tex]2\sqrt{3}[/tex]x = [tex]2\sqrt{3}[/tex] + [tex]5\sqrt{3}[/tex]
= [tex]2\sqrt{3}[/tex]x = [tex]7\sqrt{3}[/tex] / : [tex]\sqrt{3}[/tex]
= 2x = 7 / : 2
x = [tex]\frac{7}{2}[/tex]
d)
[tex]\sqrt{6}[/tex] - [tex]2\sqrt{24}[/tex]x = [tex]\sqrt{600}[/tex]
= [tex]\sqrt{6}[/tex] - [tex]2\sqrt{4 *6}[/tex]x = [tex]\sqrt{6}[/tex] · [tex]\sqrt{100}[/tex]
= [tex]\sqrt{6}[/tex] - [tex]4\sqrt{6}[/tex]x = [tex]10\sqrt{6}[/tex]
= [tex]-4\sqrt{6}[/tex]x = [tex]10\sqrt{6}[/tex] - [tex]\sqrt{6}[/tex]
= [tex]-4\sqrt{6}[/tex]x = [tex]9\sqrt{6}[/tex] / : [tex]\sqrt{6}[/tex]
= -4x = 9 / : (-4)
x = [tex]-\frac{9}{4}[/tex]