Question

Factorise 15x +3x²-18
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Answer 1

Answer:

3x²+ 15x -18

=3(x2 +5x - 6).

= 3(x2 + (6x-x)-6)

= 3(x2+6x-x-6)

=3(x(x+6)-1(x+6))

= 3(x+6)(x-1)

Answer 2

Step-by-step explanation:

3x²+15x-18=0

3x²+18x-3x-18=0

3x(x+6)-3(x+6)=0

(3x-3)(x+6)=0

x=3/3 or x= -6

x=1 or x= -6