college algebra help!!!

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Solve the equation by extracting the square roots. When a solution is irrational, list both the exact solution and its approximation rounded to two decimal places.

(x + 2)2 = 13

(small value) x=       approx=

(larger value) x=       approx=

Sep 11th, 2015

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taking the squareroot on both sides give the two solutions below

(x+2)=+squareroot(13)   (i)

(x+2)=-squareroot(13)   (ii)

small value of x is found by solving (ii)


x=-squareroot(13)-2, (approx=-5.61)

Large value of x is found by solving (i)


x=squareroot(13)-2, (approx=1.61)

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Sep 11th, 2015

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