Question

Doprowadź do postaci a√b

0.2√50 + 0.8√72 - 0.3√32=

Answer 1

0,2√25×2 + 0,8√36×2 - 0,3√16×2 = 0,2×5√2 + 0,8×6√2 -0,3×4√2 = √2 + 4,8√2 - 1,2√2= 4,6√2