Respuesta :
(x+6)(x+2)=60
expand
x^2+6x+2x+12=60
x^2+8x+12=60
minus 60 both sides
x^2+8x-48=0
factor
what multiplies to -48 and adds to 8
-4 and 12
(x-4)(x+12)=0
set each to zero
x-4=0
x=4
x+12=0
x=-12
x=4 or -12
solutions are x=-12 and 4
expand
x^2+6x+2x+12=60
x^2+8x+12=60
minus 60 both sides
x^2+8x-48=0
factor
what multiplies to -48 and adds to 8
-4 and 12
(x-4)(x+12)=0
set each to zero
x-4=0
x=4
x+12=0
x=-12
x=4 or -12
solutions are x=-12 and 4
The solution to the equation is x=-12 and 4, Among the options given x = 4 is the correct answer.
What is an Equation ?
An equation is a mathematical expression that contains an equals symbol.
In the question it is given that
(x+6)(x+2)=60
On solving this we get
x²+6x+2x+12=60
x²+8x+12=60
x²+8x-48=0
To determine the factors
(x-4)(x+12)=0
now
x-4=0
x=4
x+12=0
x=-12
x=4 or -12
The solution to the equation is x=-12 and 4.
Among the options given x = 4 is the correct answer.
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