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ALEKS Precal Prep Questions and Answers Fully Solved
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Exam of 3 pages for the course ALEKS at ALEKS (ALEKS Precal Prep)
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ALEKS Precal PrepAleks - Factoring a quadratic with leading coefficient greater than 1 AC Methond -
answerAC Method
2z^2=3z-14
^Is already in the form of ax^2=bx=c
AC= 2*(-14) = -28
Factors that add to 3z = 7/-4
Replace 3z with 7/-4
2z^2-4z=7z-14
Factor out 2z for the first half
2z(z-2)
Factor our 7 for other half
7(z-2)
Answer = (z-2)(2z+7)
Solving a quadratic equation using the square root property: Exact answers, basic -
answerSolve x^2=45 where x is a real number
Simplify your answer as much as possible
Consider the equation x^2=a
A= positive the equation has two solutions:
x=sqrt(a) x=-sqrt(a)
When A is negative, the equation has no real solution
So in this problem
x^2=45 has two solutions x=sqrt(45) x=-sqrt(45)
Simplify --> sqrt(45)=sqrt(9*5)=3 sqrt(5)
Answer = 3 sqrt(5) -3 sqrt(5)
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