Nice solution and explanation. There is another way to solve the problem after finding out that: 2x - 1 = √3 and therefore by squaring: 2x^2 = 2x + 1 By multiplying by x we obtain: 2x^3 = 2x^2 + x = 3x + 1 By taking to the third power we obtain: 8x^9 = 27x^3 + 1 + 9x (3x + 1) = 27x^3 + 27x^2 + 9x + 1 Therefore: 16x^9 = 27(2x^3 ) + 27(2x^2 ) + 9(2x) + 2 = 27(3x + 1) + 27(2x + 1) + 18x + 2 And therefore: 16x^9 = 153x + 56 The rest is known.
@MasterTMathsClass7 ай бұрын
Well done 🎉
@amaama41406 ай бұрын
Very nice math solution, but I genuinely thought this was recorded in 2006. You should consider using better equipment. It really makes a difference.
@shannonmcdonald75846 ай бұрын
Very nice. 2 things I didn't understand: root 2 was replaced with 1, and 4x² was rewritten as (4x + 2).
@therrontelford27866 ай бұрын
I noticed that too
@shannonmcdonald75846 ай бұрын
@@therrontelford2786 I figured out the 4x+2, but not the 1
@johnmaulkin-ur8lm7 ай бұрын
Many thanks; good health to you.
@MasterTMathsClass7 ай бұрын
🙏
@НеллиПшено5 ай бұрын
Простое решение. Все упрощаем и вычисляем методом устного счета. 1. Сокращаем все выражение в скобках на √2. 2. Складываем числитель √ 3+1 округляем, получаем 2,8. 3. Делим числитель на знаменатель 2,8 : 4 = 0,7. 4. Возводим в 9 степень 0,7 х 0,7= 0,49 округляем до 0,5. 0,5 х 0,5 х 0,5 х 0,5= 0,0625 округляем до 0,06 0,7 х 0,06=0,042 Если нужна большая точность, используем калькулятор.
@JutroToDzis6 ай бұрын
((sqrt,(3)+1)³)³ (a+b)³=a³+3a²b+3ab²+b³ twice. without x. Simple.
@robertosierrai74866 ай бұрын
Gracias a estos ejercicios los alumnos se alejan de las matemáticas. Ejercicios que no tienen un objetivo, ni aplicación práctica. Los jóvenes de hoy en día aprenden diferente a los jóvenes que fuimos nosotros. El chico de hoy agarra la calculadora y resuelve en 2 minutos
@MasterTMathsClass6 ай бұрын
Thanks 🎉
@TioCelo727 ай бұрын
16*4x^2 is not equal to 16(4x+2).
@obobro6 ай бұрын
4x^2 = 4x+2 from above, that was just a simple replacement 3:30
@nikolayguzman3317 ай бұрын
The idea is very deep, but if ((((SQRT 3 +1)/2) ^2)^2)^2 and Result multiply by (SQRT 3 +1)/2) the result will be more faster, for my opinion.
@MasterTMathsClass7 ай бұрын
Nice one🎉
@elenaokon27367 ай бұрын
It's interesting, but maybe the direct calculation was even simpler. But anyway, nice exercise!
@MasterTMathsClass7 ай бұрын
Thanks 🎉
@khalidalward34835 ай бұрын
The solution steps do not need this complexity , Which has no need Answer the question: no more than 4 steps,, and with ease