exam Maths Puzzle Numerical Ability

Hi! I need to calculate the discriminant and state how many real solutions each equation has.

4x^2-6x+4=0
and
4x^2-4x+1=0

Thanks for youe help in advance!

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exam Other Question

4 2 2
------ + ------- - ----- =
3xyz2 xyz 3z2 hi! I am solving for base and rounding to the nearest hundreth as needed. I know that base= portion/rate however I can not figure these two problems out.

1. 36 is .75% of

2. 10,800 is 90% of

thanks!