63x^2 + 44x - 32 = 0 (9x - 4)(7x + 8) = 0
Question 3 (Multiple Choice Worth 4 points)[6.03] If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?2x − 4y = 63x − y = 12
3x + 6y = 363x - 6y = 0 add both equations6x = 36x = 63x - 6y = 03(6) - 6y = 018 - 6y = 018 = 6y3 = yThe solution point is (6, 3).
The input to a function need not be a number, it can be any well defined object. For example, a function might associate the letter A with the number 1, the letter B with the number 2, and so on. If the inputs and outputs are numbers, then the most obvious examples are the polynomials. f(x) = x + 1 is a simple example, a function that adds one to the input. f(1) = 1 + 1 = 2, f(2) = 2 + 1 = 3. Also, g(x) = 2x is a function that doubles the input. g(3) = 6, g(4) = 8. Another example is h(x) = 2x + 1. This doubles the output, and adds 1. The result is that h(1) = 2*1 + 1 = 3, h(2) = 2*2 + 1 = 5. i(x) = x is another function that does nothing to x. So i(1) = 1, i(2) = 2. f(x)=x^3+14x^2+63x+90 x=-6 Finding root using the Factor Theorem
63x/49 = 9x/7
189xy
(14x^3 - 10x^2) = 2x^2(7x - 5) 63x - 45 = 9(7x - 5) 14x^3 - 10x^2 + 63x - 45 = (2x^2 + 9)(7x - 5)
315x8
It is 2x2 - 7x + 9
Approximately 71,428.571. If thought of as .63x=45,000, then x=45,000/.63=71,428.571.
The zip code of Eskilstuna in sweden is of the following format: 63x xxeg: 63100
63x^2 + 44x - 32 = 0 (9x - 4)(7x + 8) = 0
-3x + 6 = -30 -3x = -30 - 63x = 36x = 36/3Therefore, x = 12.
x=372/71 y=-21/9
In 63x=9. X=0.142857142857143. So 63(0.142857142857143)=9 or 63(1/7) = 9
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