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Answer:
Division is not closed
explanation:
addition and subtraction are closed for polynomials because the result of adding and multiplying two polynomials is always another polynomial. Division on the other hand is not closed. If you divide two polynomials, the result is not always a polynomial.
Answer:
LCM = 540
Step-by-step explanation:
Prime factors of each number:
18 = 2*3²
54 = 2*3³
60 = 2²*3*5
Since they don't necessarily have prime factors in common, we multiply the largest prime factors together:
2²*3³*5 = 4*27*5 = 540
the given expression is,
5x - (x +1) = 5 - 2x
5x - x - 1 = 5 -2x
4x + 2x = 5+1
6x = 6
x = 6/6
x = 1
thus, the answer is x = 1