The answer is the number 4
Answer:
1. -2, -4
2. 7, ½
3. -2, -3
Step-by-step explanation:
1) -x² - 6x - 8 = 0
x² + 6x + 8 = 0
x² + 4x + 2x + 8 = 0
x(x + 4) + 2(x + 4) = 0
(x + 2)(x + 4) = 0
x = -2 , -4
2) 2x² - 15x + 7
2x² - 14x - x + 7 = 0
2x(x - 7) - (x - 7) = 0
(2x - 1)(x - 7) = 0
x = ½, 7
3) 3x² + 15x + 18 = 0
x² + 5x + 6 = 0
x² + 3x + 2x + 6 = 0
x(x + 3) + 2(x + 3) = 0
(x + 3)(x + 2) = 0
x = -2, -3
I think the answer is B.) 15
If you look at the number of students who like mathematics but not physics, that's 5 students.
Then we see that 20 students like physics but not mathematics.
So there's 15 more students<span>
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A polynomial with roots a and b is (x - a)(x - b).
(x - 2)(x - (-1))(x - 4) = 0
(x - 2)(x + 1)(x - 4) = 0
has roots 2, -1, and 4.
Answer:
121.5
Step-by-step explanation: so what u are supost to do is multiply the sides which will give you your answer of 121.5.
