a+b=4 এবং a-b=2 হলে, a2+b2 এর মান কত ?
a+b=4 এবং a-b=2 হলে, a2+b2 এর মান কত ? Correct Answer 10
<math xmlns = "http://www.w3.org/1998/Math/MathML"><msup><mi>a</mi><mn>2</mn></msup><mo> </mo><mo> + </mo><mo> </mo><msup><mi>b</mi><mn>2</mn></msup><mo> </mo><mo> = </mo><mo> </mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo> </mo><mfenced open = "{" close = "}"><mrow><msup><mfenced><mrow><mi>a</mi><mo> </mo><mo> + </mo><mi>b</mi></mrow></mfenced><mn>2</mn></msup><mo> </mo><mo> + </mo><mo> </mo><msup><mfenced><mrow><mi>a</mi><mo> </mo><mo> - </mo><mo> </mo><mi>b</mi></mrow></mfenced><mn>2</mn></msup></mrow></mfenced><mspace linebreak = "newline"/><mo> = </mo><mo> </mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo> </mo><mfenced><mrow><msup><mn>4</mn><mn>2</mn></msup><mo> </mo><mo> + </mo><mo> </mo><msup><mn>2</mn><mn>2</mn></msup></mrow></mfenced><mspace linebreak = "newline"/><mo> = </mo><mo> </mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo> </mo><mfenced><mrow><mn>16</mn><mo> </mo><mo> + </mo><mo> </mo><mn>4</mn></mrow></mfenced><mspace linebreak = "newline"/><mo> = </mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo> </mo><mo>×</mo><mo> </mo><mn>20</mn><mo> </mo><mo> = </mo><mo> </mo><mn>10</mn></math>