Quadratic in Form Polynomials Answers
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Which equation is quadratic in form?
A
4(x – 2)2 + 3x – 2 + 1 = 0B
8x5 + 4x3 + 1 = 0C
10x8 + 7x4 + 1 = 0D
9x16 + 6x4 + 1 = 02
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What are the solutions of the equation x4 – 9x2 + 8 = 0? Use u substitution to solve.
A
x = 1 and x =
B
x = ±1 and
C
x = ±i and
D
x = ±i and
3
What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation?
A
u = x2B
u = 2x2C
u = x4D
u = 4x44
Which quadratic equation is equivalent to (x – 4)2 – (x – 4) – 6 = 0?
A
(u – 4)2 – (u – 4) – 6 = 0 where u = (x – 4)B
u2 – (u – 4) – 6 = 0 where u = (x – 4)C
u2 – 16 – u – 6 = 0 where u = (x – 4)D
u2 – u – 6 = 0 where u = (x – 4)5
What are the solutions of the equation x4 – 5x2 – 14 = 0? Use factoring to solve.
A
and
B
and
C
and
D
and
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