Find the coordinates of the pointsWhere the graph of the polynomial y = x²+x-6 intersects x-axis. About the author Alaia
Answer: i) If 2x 2 +kx+3=0 has equal roots, then b 2 −4ac=0. Here, a=2,b=k,c=3 x 2 +kx+3=0 b 2 −4ac=0 k 2 −4(2)(3)=0 k 2 =24 k=± 24 =±2 6 ii) If kx 2 −2kx+6=0 has equal roots, then b 2 −4ac=0. Here, a=k,b=−2k,c=6 kx(x−2)+6=0 kx 2 −2kx+6=0 4k 2 −4(k)(6)=0 4k 2 −24k=0 4k(k−6)=0 For k=0, equation is not quadratic. k=6 Step-by-step explanation: Reply
Answer:
i)
If 2x
2
+kx+3=0 has equal roots, then b
2
−4ac=0.
Here, a=2,b=k,c=3
x
2
+kx+3=0
b
2
−4ac=0
k
2
−4(2)(3)=0
k
2
=24
k=±
24
=±2
6
ii)
If kx
2
−2kx+6=0 has equal roots, then b
2
−4ac=0.
Here, a=k,b=−2k,c=6
kx(x−2)+6=0
kx
2
−2kx+6=0
4k
2
−4(k)(6)=0
4k
2
−24k=0
4k(k−6)=0
For k=0, equation is not quadratic.
k=6
Step-by-step explanation:
Answer:
y=×+-3
Step-by-step explanation:
hope you u nderstand