exam Maths Puzzle Numerical Ability

1/4{5x-1/2}-1/3<2/3 use builder notation and solve {xlx } the l is post to be a straight line

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exam Other Question

R. H. Bruskin Associates Market Research found that 40% of Americans do not think that having a college education is important to succeed in the business world. If a random sample In a complex number system, any quadratic equation has either one or two solutions. (That is the T/F question)

I believe this is false because I thought they will always have 2 solutions but can someone explain if I am wrong?