Question

Media geometrica a 5√2 -1 si 5√2 +1

Answer 1

stim formula (a-b)(a+b)=a^2-b^2
$(5 \sqrt{2} - 1)(5 \sqrt{2} + 1) = (5 \sqrt{2} ) ^{2} - {1}^{2} = 25 \times 2 - 1 = 50 - 1 = 49$
$\sqrt{49} = 7$
Cu placere :))