Im not expert, but this video could end in less than 1:30. People can already solved easily at 1:20 though 😅 Then (a + b )^2 formula just make it more complicated still nice insight..
What I thought, too, but this is about the Matheolympiade, which is a contest. And so it was probably specifically asked of you to do it this way just tovprove that you can.
@@felixgaede6754 Makes sense but still stupid, as long as you get it right you get it right, who cares if it's by intuition or by calculation or by algebra, doesn't even matter.
well, 2²⁰-2¹⁶ = 2²⁰-2⁶2¹⁰ = 1Mi - 64 Ki = 1024Ki-64 Ki = 960 Ki = 960 × 1024 = 983 040
Im not expert, but this video could end in less than 1:30. People can already solved easily at 1:20 though 😅
Then (a + b )^2 formula just make it more complicated
still nice insight..
{0+0 ➖ }^2=1^2 (x ➖ 2x+1).
Bro no algebra was needed, I solved this in like 15-20 seconds with pure multiplication lol
What I thought, too, but this is about the Matheolympiade, which is a contest. And so it was probably specifically asked of you to do it this way just tovprove that you can.
@@felixgaede6754 Makes sense but still stupid, as long as you get it right you get it right, who cares if it's by intuition or by calculation or by algebra, doesn't even matter.