Question

24=(x+3) × (×+1) Bhaskara


25x=(2x+4)×(x+2) Bhaskara

Answer 1

A) formula de Bhaskara -b+-√B²-4ac/2a24=(x+3) .(X+1)
24=X²+X+3x+3
24=X² +4x+3

X²+4x+3-24=0
X² +4x-21=0
-4+-√4²- 4(1.(-21)/2-4+-√16+84/2
-4 +-√100/2-4+- 10/2

X,=-4+10/2
X,=6/2
X,=3

X,,=-4-10/2

X,,=-14/2

X,,= -7


25x= (2x+4).(x+2)
25x=2x²+4x +4x +8
25x=2x² +8x +8
2x²+8x+8-25x=0
2x²+8x-25x +8=0
2x²- 17x +8=0
Fórmula de Bhaskara-b +-√b²-4ac/2a
+17+-√(-17)²-4(.2.8)/4
+17+-√289 -64/4
+17+-√225/4
+17+-15/4

X,=17+15/4
X,=32/4X,=8

X,,=+17-15/4

X,,=2/4

X,,=1/2