Question

Rezolvați in R ecuatia:
(x+1)^2+(3x-1)^2=(x-3)^2+(3x+4)^2

Answer 1

Sper ca l-am rezolvat bine..

In orice caz, se face pe formula binomului la patrat:
(x^2+y^2) = x^2+2xy+y^2
(x^2-y^2) = x^2-2xy+y^2

:)

Answer 2

$- 4x + 10 {x}^{2} + 2 = \\ \\ 18x + 10 {x}^{2} + 25 = \\ \\ - 4x + {10x}^{2} + 2 - 18x - 10 {x}^{2} - 25 = 0 \\ \\ - 22x - 23 = 0 \\ \\ - 22x = 23 \\ \\ x = - 1 \frac{1}{22}$