Răspuns:
45,-7rad7+9rad3,-6/25,0
Explicație pas cu pas:
[tex]a) {7}^{2} - {3}^{2} + ( - \sqrt{5} ) {}^{2} = 49 - 9 + \sqrt{5} {}^{2} = 40 + 5 = 45[/tex]
[tex]b)0 {}^{100} + ( - \sqrt{7} ) {}^{3} + \sqrt{243} = 0 + ( - \sqrt{7} ) {}^{3} + 9 \sqrt{3} = ( - \sqrt{7} ) {}^{3 } + 9 \sqrt{3} = - \sqrt{7 {}^{3} } + 9 \sqrt{ 3} = - 7 \sqrt{7} + 9 \sqrt{3} [/tex]
[tex]c) \sqrt{1.44} - (1.2) {}^{2} = \sqrt{ \frac{36}{25} } - ( \frac{6}{5} ) {}^{2} = \frac{6}{5} - (\frac{6}{5} ) {}^{2} = \frac{6}{5} - \frac{36}{25} = - \frac{6}{25} [/tex]
[tex]d) \sqrt{3 {}^{2} + 4 {}^{2} } - \sqrt{5 {}^{2} } = \sqrt{9 + 16} - 5 = \sqrt{25} - 5 = 5 - 5 = 0[/tex]
