URI Math Placement Exam Questions And
Answers
Quadratic formula x= -b + or - radical (b squared - 4ac) all over 2a
Multiplying fractions multiply through
(numerator x numerator) over (denominator over denominator)
SIMPLIFY
Dividing fractions Keep. Change. Flip
-KEEP first fraction
-CHAN...
Quadratic formula x= -b + or - radical (b squared - 4ac) all over 2a
Multiplying fractions multiply through
(numerator x numerator) over (denominator over denominator)
SIMPLIFY
Dividing fractions Keep. Change. Flip
-KEEP first fraction
-CHANGE division sign to multiplication sign
-FLIP second fraction
-multiply through
-SIMPLIFY
Fraction to a power If fraction in parentheses:
-the whole fraction times itself x many times
-multiply through
, URI Math Placement Exam Questions And
Answers
If no parentheses:
-only the number with the exponent is effected
Factoring
-how and what signs to use SUM CENTER
-find two numbers that add to middle term and multiply to outside term
-if second sign in original equation is positive, then both signs in parentheses are same as first
sign in equation
-if second sign is negative, then both signs in parentheses are different
-final answers are opposite of signs in parentheses
Exponent properties -negative exponent = one over original number to the original power
(except positive power)
-fractional exponent = denominator root of original number
-numerator remains as exponent to original number
-anything to power of 0 = 1
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