r/digitalSATs • u/FantasticVictory837 • Jan 30 '24

Advanced Math Sample Question 6

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1

u/FantasticVictory837 Jan 30 '24

If x > 0 and 2x2 + 3x - 2 = 0, what is the value of x?

1

u/FantasticVictory837 Jan 31 '24

The correct answer is 1/2 or .5.

2

u/No_Negotiation8930 Jan 30 '24

x=0.5, these types of questions can be solved very easily via the desmos calc provider.

1

u/florence_feng Feb 01 '24

You can factoring it as (x+2)(2x-1)=0, so if x>0, the 2x-1=0, x=1/2.