Explications étape par étape:
calculer en respectant les priorités 1
[tex](3 \times 5) {}^{2} \\ = 15 {}^{2} [/tex]
[tex]3 \times 5 {}^{2} \\ = 75[/tex]
[tex]3 {}^{2} \times 5 \\ = 45 [/tex]
[tex]3 {}^{2} \times 5 {}^{2} \\ = 15 {}^{2} \\ = 225 [/tex]
[tex](2 \times 4 {}^{2} ) \\ = 2 {}^{5} \\ = 32[/tex]
[tex]2 {}^{3} \times 4 {}^{3} \\ = 8 {}^{2} \\ = 512[/tex]
[tex]2 \times 4 {}^{4} \\ = 2 {}^{9} \\ = 512[/tex]
calculer chacun des expressions
[tex]5 {}^{2} - 7 = 18 [/tex]
[tex](7 {}^{2} - 1)x \times 10 = 480x[/tex]
[tex]2 {}^{3} \times 8 {}^{3} = 16 {}^{6} \\ = 4096[/tex]
[tex] \frac{6 {}^{2 } - 1 }{ 2 { } ^{2} - 1 } = \frac{35}{3} \\ [/tex]
[tex]3x \times ( \frac{ 1}{2} ) {}^{1 } \\ = \frac{3}{2}x \\ = 1.5x [/tex]
[tex] \frac{2}{3} \times ( \frac{3}{2} ) {}^{3} = \frac{9}{4} [/tex]
[tex] \frac{5}{2} \times ( \frac{4}{5} ) {}^{2} = \frac{8}{2} [/tex]
[tex] \frac{4 {}^{7} }{8 {}^{7} } = \frac{1}{128} = 0.007[/tex]
calculer en respectant les priorités 2
[tex]2 \times 3 {}^{2} + 4 \\ = 22[/tex]
[tex]2 \times 3 - 4 {}^{2} \\ = - 10[/tex]
[tex]2 {}^{2} \times 3 + 2 \\ = 14[/tex]
[tex]2 \times 3 {}^{2} + 4 \times 5 \\ = 38[/tex]
[tex](2 \times 3) {}^{2} + 4 \times 5 \\ = 56[/tex]
[tex]2 + 3 {}^{2} \times 4 \\ = 38[/tex]
[tex]2 + 3 \times 4 {}^{2} \\ = 50[/tex]
[tex]2 {}^{2} + 3 \times 4 \\ = 16[/tex]
[tex]2 \times 3 + 4 {}^{2} \times 5 \\ = 86[/tex]
[tex]2(3 + 4) {}^{2} \times 5 \\ = 490[/tex]
