Question

solve by factorisation method:
3(x^2-6)=x(x+7)-3. How to do?​

Answer 1

Answer:

Step-by-step explanation:3x^2-18=×^2+7x-3x

3x^2-18=x^2+4x

3x^2-18-x^2-4x=0

2x^2-4x-18=0

Fraction not possible I am sorry

Answer 2

Answer:

Step-by-step explanation:

when u expand you'll get

3x^2-18=x^2+7x-2          the power only applies for the x if there is no bracket

2x^2-7x-18=0                  e.g 5x^2, the power is for only x but, (5x)^2, the                                                      

it can't be solved by       power is for both and that give 25x^2

fatorization but the

answers are  

x =(7-√193)/4=-1.723

x =(7+√193)/4= 5.223

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