Mathematics, 02.03.2021 18:50 Gigglygoose4181
Solve x2 + 4x − 4 = 0 using the completing-the-square method. Select all correct answers below.
A. x=2- sqrt8
B. x=-2+2 sqrt2
C. x=2+ sqrt8
D. x=-2-2 sqrt2
Answers: 1
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Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?
Answers: 3
Solve x2 + 4x − 4 = 0 using the completing-the-square method. Select all correct answers below.
A....
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