Rational multiplication: (1+x)^1/2 * (1-x)^1/2

grapz

Junior Member
Joined
Jan 13, 2007
Messages
80
Can someone show me how to do this

(1+x)^1/2 * (1-x)^1/2

The answer given in the book is (1 - x^2)^1/2
 

Loren

Senior Member
Joined
Aug 28, 2007
Messages
1,299
Re: Rational multiplication

(1+x)^1/2 * (1-x)^1/2
\(\displaystyle (1+x)^{1/2} * (1-x)^{1/2}\)

Use the rule--- \(\displaystyle a^x\cdot b^x = (ab)^x\)
 
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