9 - 2√146
243708/14737
$5^{2}$ - 6x5 + 5
9 - 2√146 = 3
Find the value of Cos75°cos15°+sin75°sin15°
9 - 2√145 + 1 = 3
2x^3 - 2x^2 +24
$x^{2}$ - 10x + 25
9 - 2√143 + 1 = 3
19,9 + 0,1
