Find the value of 'a' so that (-1) is a root of 2x²-x+a=0
Answers
Answered by
0
Answer:
a = -1
Step-by-step explanation:
a=(-1)
2(-1)-(-1)+a=0
2(-1)+1+a=0
(-2)+1+a=0
-2+1=a
-1=a
therefore a = -1
Answered by
0
a = -3
Given equation is 2x^2 - x+a =0
put x= -1
→ 2x^2 - x + a=0
→ 2(-1)^2 - (-1) +a =0
→ 2 + 1 +a =0
→ 3+ a =0
→ a = -3
Similar questions