Question

Спростити вираз ( 5а - 3)^2 + 30а

Answer 1

$(5a-3)^{2} +30a=25a^{2} +9-30a+30a=25a^{2} +9$

Answer 2

(5а-3)²+30а=25а²-30а+9+30а=25а²+9