Question

(ii) 2x2 + x -4 = 0
(iv) 2x2 + x + 4 = 0​
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Answer 1

Answer:

(ii)2×2+x-4=0

4+x-4=0

4-4+X=0

0+X=0

X=0 Ans...

(iv)2×2+X+4=0

4+X+4=0

4+4+X=0

8+X=0

X=8+0

X=8 Ans...

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

2x2+x-4=0

2x2+x=4

Dividing by 2 on both sides

2x2+x/2=4/2

X2 +2.x.1/4+(1/4)2= 2+(1/4)2. Since by adding (1/4)2

(X+1/4)2=2+1/16

(X+1/4)2=33/16

X+1/4=+_√33/16

If x+1/4=√33/16

X=√33-1/4

X=-1+√33/4

On other side

If x+1/4=-√33/16

X=-1-√33/4