Simplify: 3x - 9 + 13x - 6
2 answers:
You can sum like terms. Two terms can be summed if they are both constants (i.e. pure numbers) or if they involve the same powers of the same variable.
In this case, 3x and 13x can be summed because they both involve 'x' alone. The sum is
As for the other two terms, you simply have to sum two numbers, as usual:
So, the final answer is
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Answer:
Step-by-step explanation:
The relevant rule of exponents is ...
(a^b·c^d)^e = a^(be)·c^(de)
Then ...
(m^(5/4)·n^(-4/5))^(7/3) = m^(5/4·7/3)·n^(-4/5·7/3)
= m^(35/12)·n^(-28/15)
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Since you want positive rational exponents, you can write this as ...
= m^(35/12)/n^(28/15)