Question

Срочно !!!
А) (x+4)2
(a+5)2
(y-5x)2
(3y-x)2

Answer 1

(х+4)²= х²+8х+16
(а+5)²=а²+10а+25
(у-5х)²=у²-10ух+25х²
(3у-х)²=9у²-6ух+х²