Explicație pas cu pas:
[tex] \sqrt{4 \times 5 + {5}^{2} \times 7 } = \sqrt{20 + 25 \times 7} = \sqrt{20 + 175} = \sqrt{195} [/tex]
[tex] \sqrt{ {3}^{3} \times 4 - {3}^{3} + 9 \times 3 } = \sqrt{ {3}^{3} \times 4 - {3}^{3} + {3}^{3} } = \sqrt{ {3}^{3} \times 4} = 3 \times 2 \sqrt{3} = 6 \sqrt{3} [/tex]
[tex] \sqrt{15 + 6 \times 6 + {5}^{3} } = \sqrt{15 + 36 + 125} = \sqrt{176} = 4 \sqrt{11} [/tex]
