If one root of the equation 2+3x-k=0 is 6, what is the value of k?
Created: 5 years ago |
Updated: 2 years ago
best des
When we have a value of one root in a quadratic equation, make the RHS to zero (0) so that we can substitute the given root to find the other variables.
In this case, the RHS is already 0. So just substitute the given root value for x, i.e, x = 6
= > 2×6² + 3×(6) - k = 0
= > 2×(36) + 18 = k
= > 72 + 18 = k
∴ k = 90
Md Azizur Rahman
Founder of Satt
Related Question
View More
Created: 6 years ago |
Updated: 3 weeks ago
Created: 6 years ago |
Updated: 1 week ago
Created: 6 years ago |
Updated: 5 days ago
Created: 6 years ago |
Updated: 1 week ago
Created: 6 years ago |
Updated: 1 week ago
Promotion
Download Our Mobile Apps
