Question

3x^2+12x=135. find value of x

Answer 1

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3x²+12x=135

3x²+12x-135


*CommOn 3 from Equation*

3x²+12x-135

3(x²+4x-45)=0

x²+4x-45

x²+9x-5x-45

x(x+9)-5(x+9)

(x+9)(x-5)



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(x-5)=0

x=5


Answer:- x=5


==============Note:-=========°


Value of x cannot be negative Number.



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