Question

Efectuati,utilizand formula( a plus b) egal cu a la puterea a 2 a plus 2ab plus b la puterea a 2 a : (y plus 5) totu la puterea a 2 va rog am mare nevoie

Answer 1

$( {y + 5})^{2} = {y}^{2} + 2 \times y \times 5 + {5}^{2}$

$= {y}^{2} + 10y + 25$

Answer 2

(y+5)²=x²+2*y*5+5²
=x²+10y+25