Question

Nilai dari 3√20-2√45-2√45+√80-4√125
adalah...

Answer 1

3√20 - 2√45 - 2√45 + √80 - 4√125
=> 3√20 - 4√45 + √80 - 4√125
=> 3√(4 x 5) - 4√(9 x 5) + √(16 x 5) - 4√(25 x 5)
=> 6√5 - 12√5 + 4√5 - 20√5
=> -22√5

Answer 2

3√20 - 2√45 - 2√45 + √80 - 4√125
3√20 - 4√45 + √80 - 4√125
3√4x5 - 4√9x5 + √16x5 - 4√25x5
3x2√5 - 4x3√5 + 4√5 - 4x5√5
6√5 - 12√5 + 4√5 - 20√5
-22√5
#semogamembantu ..