Question

One solution of the equation 2x square -7x + k = 0 is x= -1/2. find the value of k

Answer 1

Answer:

2x² - 7x + k = 0, where x = -1/2

2 (-1/2)² - 7 (-1/2) + k = 0

2 (1/4) + 7/2 + k = 0

2/4 + 7/2 + k = 0

1/2 + 7/2 + k = 0

8/2 + k = 0

4 + k = 0

k = -4

Answer 2

Answer:

-4

Step-by-step explanation:

2*-1/2*-1/2-7-1/2+k=0

1/2+7/2+k=0

8/2+k=0

k=-8/2

k=-4