Let's expand: <math><mo>(</mo><mi>x</mi><mo> -</mo><mn>2</mn><mo>)</mo><mo>·</mo><mo>(</mo><mi>x</mi><mo> + </mo><mn>5</mn><mo>)</mo></math>
 <math></text><text><mi>x</mi><mo>·</mo><mi>x</mi></text><text><mo> + </mo><mi>x</mi><mo>·</mo><mn>5</mn></text><text><mo> -</mo><mn>2</mn><mi>x</mi></text><text><mo> -</mo><mn>2</mn><mo>·</mo><mn>5</mn></text><text></math>

▷<b>Result: &nbsp; <math><msup><mrow><mi>x</mi></mrow><mrow><mn>2</mn></mrow></msup><mo> + </mo><mn>3</mn><mi>x</mi><mo> -</mo><mn>10</mn></math></b><span style='font-size:smaller'> &nbsp; &nbsp; (computation took 2 steps and 1 ms)</span>