Simplify: 3ab-9ab+7ab Solve: A- 2(5x-3)=24 B- 5(2x+1)=50
2 answers:
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Step-by-step explanation:
Greetings !
simplify for variable y first
apply exponent rule
Add/subtract the numbers -8+3=5
Apply exponent rule
Thus,
secondly, simplify for the variable x
Apply exponent rule as we made on y
multiply bot the values we get
Hope it helps!
Answer:
256
Step-by-step explanation:
A calculator works well for this.
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None of the minus signs are subject to the exponents (because they are not in parentheses, as (-1)^5, for example. Since there are an even number of them in the product, their product is +1 and they can be ignored.
1 to any power is still 1, so the factors (1^n) can be ignored.
After you ignore all of the things that can be ignored, your problem simplifies to ...
(2^2)(2^-3)^-2
The rules of exponents applicable to this are ...
(a^b)^c = a^(b·c)
(a^b)(a^c) = a^(b+c)
Then your product simplifies to ...
(2^2)(2^((-3)(-2)) = (2^2)(2^6)
= 2^(2+6)
= 2^8 = 256
