Question

quiero saber sus ecuacion desarrollada no la raíz por favor :'(

(x-3) (x+4)=0

(x-1) (x+2)=0
​

Answer 1

Formula:

(x + a) (x + b) = x² + x(a+b) + ab

(x-3) (x+4)=0

(x)² + x(4 - 3) + (-3)(4)

x² + x - 12 = 0

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1) x - 3 = 0

x = 3

2) x + 4 = 0

x = -4

x = 3 y -4

(x-1) (x+2)=0

(x)² + x(2 - 1) + (-1)(2)

x² + x - 2 = 0

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1) x - 1 = 0

x = 1

2) x + 2 = 0

x = -2

x = 1 y -2