Use the discriminant to determine whether the quadratic equation has two unequal real solutions, a repeated real solution, or no real solution without solving the equation.x2 - 4x + 4 = 0
A. repeated real solution
B. two unequal real solutions
C. no real solution
Answer: A
You might also like to view...
Find the linearization L(x) of f(x) at x = a.f(x) = 
, a = 27
A. L(x) = 
x + 1
B. L(x) = 
x + 2
C. L(x) = 
x + 1
D. L(x) = 
x + 6
Factor the trinomial, if possible.4x3 + 4x2y - 24xy2
A. (4x2 + 8xy)(x - 3y) B. 4x(x - 2y)(x + 3y) C. 4x(x + 2y)(x - 3y) D. (x - 2y)(4x2 + 12xy)
Solve the problem.How can $42,000 be invested, part at 4% annual interest and the remainder at 10% annual interest, so that the interest earned by the two accounts is equal at the end of the year?
A. $30,000 invested at 4%; $12,000 invested at 10% B. $22,000 invested at 4%; $20,000 invested at 10% C. $12,000 invested at 4%; $30,000 invested at 10% D. $20,000 invested at 4%; $22,000 invested at 10%
Factor the sum or difference of two cubes completely.729 - x3
A. (9 + x)(81 - x2) B. (9 - x)(81 + x2) C. (9 - x)(81 + 9x + x2) D. (9 + x)(81 - 9x + x2)