Simplified:
kx + x² + 3k + 3x
The answer is 80.5 ... 805 / 5
Option B should be the correct answer
Answer:
Step-by-step explanation:
1). (B). Replace one equation with the sum/difference of both equation.
System B is
- 4x - 6y = 9 ........ <em>(1B)</em>
-4x + 3x = - x
- 6y + y = - 5y
9 - 4 = 5
- x - 5y = 5 ........ <em>(2B)</em>
2). Yes, both system are equivalent.
The equation that has an a value of 1, b value of -3 and c value of -5 is f(x) = x² -3x - 5
<h3>Quadratic equation</h3>
These are equation that has a leading degree of 2. The standard quadratic equation is expressed as:
f(x) = ax² + bx + c
Given the following coefficients
Substitute the coefficients into the formula to have;
f(x) = 1x² + (-3)x + (-5)
f(x) = x² -3x - 5
Hence the equation that has an a value of 1, b value of -3 and c value of -5 is f(x) = x² -3x - 5
Learn more on quadratic equations here: brainly.com/question/1214333
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