Answers

2014-06-24T21:19:28+08:00
2x(x²-4)=0

2x=0                          x²-4=0
2x÷2=0÷2                   x²=4
x=0                          √x²=√4
                                  x= positive or negative 2
0
tama po ba yan??..parang mali eh...
Checking:
x=0

2x(x²-4)=0
2(0) [(0)²-4)=0
0-0=0

x= positive or negative 2

2x(x²-4)=0
2(2) [(2)²-4)] = 0
4 [4-4] = 0
4 (0) = 0
Check mo. :)
2014-06-24T21:51:26+08:00
Answer No. 1:
2x^3 - 8x = 0
2x(x^2 - 4) = 0

Answer No. 2:
(x + 3)(3x^2 - 20x - 7) = 0
3x^3 - 20x^2 - 7x + 9x^2 - 60x - 21 = 0
3x^3 - 11x^2 - 67x - 21 = 0



[Sana po eh nakatulong ako... hehehe... :)]
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