Question

EVALUATE:,
(a^1)-4\a^-5×a^-3​

Answer 1

Answer:

I don't know but give you tips how to do it.

Step-by-step explanation:

How to solve for exponents

xn=y. Take the log of both sides:

logxn=logy. By identity we get:

n⋅logx=logy. Dividing both sides by log x: n=logylogx. Find the exponent of a number. ...

3n=81. Take the log of both sides:

log3n=log81. By identity we get:

n⋅log3=log81. Dividing both sides by log 3: n=log81log3.To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.Evaluating Exponents. An exponent is a number that tells how many times the base number is used as a factor. For example, 34 indicates that the base number 3 is used as a factor 4 times. To determine the value of 34, multiply 3*3*3*3 which would give the result 81.

hope it helps!