Question

1) A forma fatorada da equação x² - 10x + 24 = 0 é:
(A) (x + 4) ∙ (x - 6) = 0 

(B) (x -4) ∙ (x + 6) = 0 

(C) ( x + 4) ∙ (x + 6) = 0
 
(D) (x - 4) ∙ (x - 6)=0  

Answer 1

Resposta:

a)

$(x + 4) \sdot(x - 6) = 0 \\ \\ {x}^{2} - 6x + 4x - 24 = 0 \\ \\ \boxed{ {x}^{2} - 2x - 24 = 0}$

b)

$(x - 4) \sdot(x + 6) = 0 \\ \\ {x}^{2} + 6x -4x - 24 = 0 \\ \\ \boxed{ {x}^{2} + 2x - 24 = 0}$

c)

$(x + 4) \sdot(x + 6) = 0 \\ \\ {x}^{2} + 6x + 4x + 24 = 0 \\ \\ \boxed{ {x}^{2} + 10x + 24 = 0}$

d)

$(x - 4) \sdot(x - 6) = 0 \\ \\ {x}^{2} - 6x - 4x + 24 = 0 \\ \\ \Large \boxed{ \green{ {x}^{2} - 10x + 24 = 0}} \\ \\ \Large \boxed{ \underline{\blue{ \bf \: Bons \: Estudos!}}}$