Answer:
b) -10
Step-by-step explanation:
x^2 + 3x + k = (x - 2)(x - a)
(x - 2)(x - a) = x^2 - 2x - ax + 2a = x^2 + [-2 - a)x] + 2a
-2 - a = 3
2a = k
a = -5
k = 2(-5) = -10
Answer: b) -10
Answer:
-2
Step-by-step explanation:
18+a, a=4
18 + 4
22
Hope this help!
Equation 2 is 6 times the equation 1.
<u>Explanation:</u>
Given:
-5x - 8y = 4 -1
-30x - 48y = 24 -2
The 2nd equation can be simplified in following steps:
-30x - 48y = 24
Dividing both left and right hand side by 2. We get
-15x - 24y = 12
Dividing the equation further by 3 on both the sides. We get
-5x - 8y = 4 -3
We can see that on simplification of equation 2, it becomes same as equation 1.
Therefore, equation 2 is 6 times the equation 1.
