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Gyanvardhan Pathshala
Using formula (a + b)2 = a2+2ab + b2 to find the square of numbers
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Janusz
办美国文凭加拿大文凭澳洲文凭英国文凭学位证毕业证成绩单
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![Prove that |[1 +a^2 -b^2, 2ab, -2b],[2ab, 1-a^2 +b^2, 2a],[2b, -2a, 1-a^2 -b^2]| = (1 + a^2 + b^2)^3](http://i.ytimg.com/vi/B7UwIYXEcX8/mqdefault.jpg "Prove that |[1 +a^2 -b^2, 2ab, -2b],[2ab, 1-a^2 +b^2, 2a],[2b, -2a, 1-a^2 -b^2]| = (1 + a^2 + b^2)^3")
![det [[1 + a²- b²2, 2ab, - 2b], [2ab, 1 - a²+ b², 2a], [2b, - 2a, 1 - a² - b²]] = (1 + a²+ b²)³](http://i.ytimg.com/vi/l_RlN_yYaNY/mqdefault.jpg "det [[1 + a²- b²2, 2ab, - 2b], [2ab, 1 - a²+ b², 2a], [2b, - 2a, 1 - a² - b²]] = (1 + a²+ b²)³")
