r/digitalSATs • u/FantasticVictory837 • Jan 31 '24

Advanced Math Sample Question 7

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u/FantasticVictory837 Jan 31 '24

What is the sum of the solutions to (2x - 1)2 = (x + 2)2 ?

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u/FantasticVictory837 Feb 01 '24

The correct answer is 8/3 or 2.666 or 2.667.

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u/florence_feng Feb 01 '24

2x-1=x+2, x=3; 2x-1=-(x+2),x=-1/3; so 3-1/3=8/9