Question

stabiliti valoarea de adevar urmatoarelor propoziti ​

Answer 1

a)

$\huge(1 \frac{1}{4}) {}^{2} =( \frac{5}{4} ) {}^{2} = \frac{5 {}^{2} }{ {4}^{2} } = \frac{25}{16}$

(A)

b)

$\huge(1 \frac{3}{4} ) {}^{2} =( \frac{7}{4} ) {}^{2} = \frac{7 {}^{2} }{ {4}^{2} } = \frac{49}{16}$

≠49/32 (F)

c)

$\huge( 2\frac{1}{3} ) {}^{2} = ( \frac{7}{2} ) {}^{2} = \frac{7 {}^{2} } { {3}^{2} } = \frac{49}{9}$

(A)

d)

$\huge(1 \frac{2}{3} ) {}^{3} = ( \frac{5}{3} ) {}^{3} = \frac{5 {}^{3} }{3 {}^{3} } = \\ \\ \huge= \frac{5 \times 5 \times 5}{3 \times 3 \times 3} = \frac{125}{27}$

(A)

e)

$\huge(2 \frac{1}{2} ) {}^{3} =( \frac{5}{2} ) {}^{3} = \frac{5 {}^{3} }{ {2}^{3} } = \\ \\ \huge = \frac{5 \times 5 \times 5}{2 \times 2 \times 2} = \frac{125}{8}$

(A)

f)

$\huge(1 \frac{1}{2} ) {}^{4} = (\frac{3}{2} ) {}^{4} = \frac{3 {}^{4} }{2 {}^{4} } = \\ \\ = \huge \frac{3 \times 3 \times 3 \times 3}{2 \times 2 \times 2 \times 2} = \frac{81}{16}$

≠ 27/16 (F)