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SAT Exam Quadratic Formula Question and Answers
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SAT Exam Quadratic FormulaQuestion and Answers
quadratic formulaCorrect Answer [-b ± √(b² - 4ac)] / (2a)
slope formulaCorrect Answer (y₂- y₁) / (x₂- x₁)
integersCorrect Answer ..., -3, -2, -1, 0, 1, 2, 3, ...
rationalsCorrect Answer fractions (anything expessable as a ratio of integers)
realsCorrect Answer integers, rationals, plus special #s (like √2 or pi)
order of opperationsCorrect Answer PEMDAS (Parentheses / Exponents / Multiply / Divide / Add /
Subtract)
Arithmetic SequencesCorrect Answer t₁, t₁+ d, t₁+2d, ...
Geometric SequencesCorrect Answer t₁, t₁· r, t₁· r², ...
FactorsCorrect Answer ex. factors of 52 are 2, 4, 13, and 26
MultiplesCorrect Answer ex. multiples of 20 are 40, 60, 80, 100, ...
percentagesCorrect Answer part = (percent / 100) x whole
averageCorrect Answer average = sum of terms / number of terms
average speedCorrect Answer average speed = total distance / total time
sumCorrect Answer sum = average x (number of terms)
modeCorrect Answer mode = value in the list that appears most often
, SAT Exam Quadratic Formula
Question and Answers
medianCorrect Answer median = middle value in the list
fundamental counting principleCorrect Answer if an event can happen in N ways, and another,
independent event can happen in M ways, then both events together can happen in N x M ways.
probabilityCorrect Answer probability = number of desired outcomes / number of total outcomes
adding exponentsCorrect Answer x^a · x^b = x^(a+b)
subtracting exponentsCorrect Answer x^a / x^b = x^(a-b)
negative exponentsCorrect Answer 1 / x^b = x^(-b)
multiplying exponentsCorrect Answer (x^a)^b = x^(a·b)
x^0Correct Answer 1
rootsCorrect Answer √(xy) = √x · √y
FOILCorrect Answer (x+a)(x+b) = x^2 + (b+a)x + ab
difference of squaresCorrect Answer a^2 -b^2 = (a+b)(a-b)
a^2 + 2ab + b^2Correct Answer (a+b)^2
a^2 - 2ab + b^2Correct Answer (a-b)(a-b)
distance formulaCorrect Answer √[(x₂- x₁)^2 + (y₂- y₁)^2)]
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