Question
Solve the equation
Solve for a,b
(a1,b1)=(a,210),a∈R(a2,b2)=(a,−210),a∈R
Evaluate
8b÷(a5×a)b=1
Find the domain
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Evaluate
{a=0a5×a=0
Calculate
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Evaluate
a5×a=0
Multiply the terms
5=0
The statement is true for any value of a
a∈R
{a=0a∈R
Find the intersection
a=0
8b÷(a5×a)b=1,a=0
Simplify
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Evaluate
8b÷(a5×a)b
Multiply the terms
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Multiply the terms
a5×a
Cancel out the common factor a
5×1
Multiply the terms
5
8b÷5b
Divide the terms
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Evaluate
8b÷5
Multiply by the reciprocal
8b×51
Multiply the terms
8×5b
Multiply the terms
40b
40bb
Multiply the terms
40b×b
Multiply the terms
40b2
40b2=1
Multiply both sides
b2=40
Take the root of both sides of the equation and remember to use both positive and negative roots
b=±40
Simplify the expression
b=±210
Separate the equation into 2 possible cases
b=210b=−210
Check if the solution is in the defined range
b=210b=−210,a=0
Find the intersection of the solution and the defined range
{a=0b=−210{a=0b=210
Solution
(a1,b1)=(a,210),a∈R(a2,b2)=(a,−210),a∈R
Show Solution