Question

Efectuați,utilizând formula (a+b)la a doua =a la a doua +2ab+b la a doua

a) (x+4)la a doua=
B) (y+3)la a doua
C) (2x+1)la a doua
D (3y+2)la a doua
E (x+2y)la a doua

Answer 1

a)
${(x + 4)}^{2} = {x}^{2} + 8x + 16$
b)
${(y + 3)}^{2} = {y}^{2} + 6y + 9$
c)
${(2x + 1)}^{2} = 4 {x}^{2} + 4x + 1$
d)
${(3y + 2)}^{2} = 9 {y}^{2} + 12y + 4$
e)
${(x + 2y)}^{2} = {x}^{2} + 4xy + 4 {y}^{2}$

Sper ca te-am ajutat!