Answer:
6. c²-3c-28 = 0
= (c-7)(c+4)=0
= c-7=0
c+4=0
c = 7, - 4
7. 3x²-x=0
= (3x-1)x=0
= 3x-1 = 0
x = 1/3, 0
8. 6x²-12x=4x
6x²-12x-4x=0
6x²-8x=0
2(3x²+4x)=0
x = 0, -4/3
9. 36²-9x=0
9(4x²-x)=0
9(4x-1)x=0
x = 1/4, 0
10. 9x²-6x=0
3(3x²-2x) =0
3(3x-2)x=0
x = 2/3, 0
Step-by-step explanation:
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