9. What number is 70% of 40?(Use the letter b for the variable.)
2 answers:
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To find the discriminant of the following equation you have to remember tha main formula : ax^2 +bx + c and the one for discriminant is <span>b^2 -4ac
So, now we can solve it </span>
, so the discriminants is 0 :)
Hope it's clear!
So, now we can solve it </span>
Hope it's clear!