Question

прошу вас помогите
За рание благодарю

Answer 1

Вычислить.

$\sqrt{25*2^2 - 6^2} = \sqrt{5^2*2^2 - 6^2} = \sqrt{(5*2)^2 - 6^2} = \sqrt{10^2 - 6^2} =\\= \sqrt{(10 - 6)(10 + 6)} = \sqrt{4*16} = \sqrt{4}*\sqrt{16} = 2*4 = 8.$

Ответ: 8.

Answer 2

$\sqrt{25 \times {2}^{2} - {6}^{2} } = \sqrt{25 \times {2}^{2} - {3}^{2} \times {2}^{2} } = \\ \\ = \sqrt{(25 - 3^{2}) \times {2}^{2} } = \sqrt{(25 - 9) \times {2}^{2} } = \sqrt{16 \times {2}^{2} } = \\ \\ = 4 \times 2 = 8$
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