Question

right ans mark as brainliest
find the value of x 3x^2+12x=135

Answer 1

3 x^2 + 12 x = 135

3( x^2 + 4 x ) = 135

x^2 + 4 x = 135 /3

x^2 + 4 x = 45

x^2 + 4 x - 45 = 0

x^2 + 9 x - 5 x - 45 = 0

x ( x + 9 ) - 5 ( x + 9 ) = 0

( x + 9 ) ( x - 5 ) = 0

x + 9 = 0 , x - 5 = 0

x = - 9 , x = 5

therefore ,

Value of ' x ' = - 9 , 5

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Your Answer : x = - 9 , 5
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