Imaginary #s
This is the square root of -36.
What is 6i ?
This is the factored form of x2 + 5x + 4.
What is (x + 1)(x + 4) ?
These are the solutions to (x + 5)(x - 2) = 0.
What are -5 and 2 ?
This is the discriminant of x2 + 10x - 25 = 0.
What is 200?
This is (-2 + 3i) + (4 + 5i) simplified.
What is 2 + 8i ?
This is the factored form of x2 - 7x + 10.
What is (x - 5)(x - 2) ?
These are the solutions to x2 = 9.
What are 3 and -3 ?
This is the number and type of solutions if the discriminant is 16.
What are 2, real, rational solutions?
This is (5 + 4i) - (-1 - 2i) simplified.
What is 6 + 6i ?
This is the factored form of x2 - 2x - 35.
What is (x + 5)(x - 7) ?
These are the solutions to x2 +6x - 4 = 0. Use the quadratic formula and simplify at the end.
What are -3±√13 ?
This is the discriminant of the equation -5x2 = -6x +4.
What is -44?
This is (5 + 4i)(1 + 2i) simplified.
What is -3 + 14i ?
This is the factored form of 9x2 - 1.
What is (3x + 1)(3x - 1) ?
These are the solutions to 7x2 + 105 = 0.
What are ±i√15 ?
What is 0?
This is i42 simplified.
What is i2 or -1 ?
This is the factored form of 4x2 - 4x - 15.
What is (2x - 5)(2x + 3) ?
These are the solutions to 3x2 - 5x = -12. Use the quadratic formula.
What are (5±i√119)/6 ?
The equation p = -15,000g2 + 34,500g -16,800 models the daily profits, p, of a gas station based on the price per gallon of g. This is whether or not the discriminant indicates the station can profit $4000 a day. Must use discriminant and explain.
What is NO? The discriminant is negative, so there are no real values of g that will give p = $4000.