URI MATH PLACEMENT EXAM WITH COMPLETE SOLUTIONS 100% 2023/2024

URI MATH PLACEMENT EXAM WITH COMPLETE SOLUTIONS 100% 2023/2024 Absolute value How far away a number is from zero -whatever the answer is, but positive Absolute value brackets in equation -take out brackets -turn into two equations; one positive answer, one negative -solve for x for both equations -two answers Adding fractions -find least common denominator -multiply each numerator by however much it's denominator was multiplied -add new numerators, keep denominator -SIMPLIFY Subtracting fractions -find least common denominator -multiply each numerator by however much it's denominator was multiplied -subtract new numerators, keep denominator -SIMPLIFY 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 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