Question

Calculati cit mai simplu              radical 52²-48²           →→→ 54 puncte←←←

Answer 1

v52^2 - 48^2 = v (52+48)(52-48) =
= v100 × 4 = v400 = + - 20

v = radical

a^2 - b^2 = (a-b) (a+b)

Answer 2

$\sqrt{(52+48)(52-48)} = \sqrt{100*4 } = \sqrt{400} =$ 20