5x=25
Because negative 3y and positive 3y got cancelled
The problem given above can be solved through the concept of permutation because of the importance of the arrangements. This may be solved through calculators directly by keying in,
10P5
That is, the permutation of 10 taken 5. The answer to this permutation is 30,240.
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➷ Expand out each option to see which one it is
1) (x + 1)(x - 3) = x^2 - 3x + x - 3 = x^2 - 2x - 3
(x - 6)(x^2 - 2x - 3) ==> x^3 - 8x^2 + 9x + 18
As you can see, this matches the original equation.
Therefore, the answer is option A.
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Answer:
x = 13
Step-by-step explanation:
NM + ML + LK = x - 6 + 9 + 2x - 19
NK = 23
x - 6 + 9 + 2x - 19 = 23
3x - 16 = 23
3x = 39
x = 13
