Question

3x^2-12x15=0
Prime factorization find value of x

Answer 1

Answer:

x = 5 Or x = -1

Step-by-step explanation:

3x²-12x-15=0

/* Splitting the middle term,we get

=> 3x²-15x+3x-15=0

=> 3x(x-5)+3(x-5)=0

=> (x-5)(3x+3)=0

=> x-5 = 0 Or 3x+3 = 0

=> x = 5 Or 3x = -3

=> x = 5 Or x = (-3)/3 = -1

Therefore,

x = 5 Or x = -1

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Answer 2

Solution

3x²-12x-15=0

Splitting Middle Term

= 3x² - 15 x + 3x - 15 = 0

= 3x (x - 5) + 3 (x - 5) = 0

= (x - 5) (3x + 3) = 0

= x-5 = 0

= x = 5

= x = 5

Hence,

( x = 5 / x = -1)