1. Resuelve las ecuaciones: a. x2 + 12x + 32 = 0

b. 9x2 +6x + 1 = 0

2. Resuelve las ecuaciones:

a. 2x2 +5x = 0

b. 2x2 -32 = 0

3. Calcula el valor de m para que la ecuación x2 + mx + 9 = 0 tenga solución doble.

4. Resuelve las ecuaciones:

a. x4 - 25x2 + 144 = 0

b. x4 + 9x2 - 162 = 0
AYUDA ;v

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

What is the solution to the equation below? 3/x-2+6=square root x-2 +8