Răspuns:
Explicație pas cu pas:
a)
7/3 * 9 + 7/2 * 4 - 1/6 * 18
= 21 + 14 - 3
= 32
b)
7√25 = 7*5 = 35
√14+35 = √49 = 7
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26^2 - 24^2 = (26 - 24)(26 + 24) = 2*50 = 100
√100 = 10
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√0,09 = 0,3
10*0,3 = 3
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7 - 10 + 3 = 0
c)
0,(3) = 3/9 = 1/3
3*1/3 = 1
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0,0(3) = 3/90 = 1/30
30*1/30 = 1
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0,00(3) = 3/900 = 1/300
300*1/300 = 1
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0,000(3) = 3/9000 = 1/3000
3000*1/3000 = 1
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x = √1 + √1 + √1 + √1 = 1 + 1 + 1 + 1 = 4 = 2^2. patrat perfect
