Question

-48 +482 +1296
x=
2.
-48 + 3600
2
-48 +60
= 6 or – 54
2
Since x is the speed of the stream, it cannot be negative. So, we ignore the root
54. Therefore, x = 6 gives the speed of the stream as 6 km/h.
EXERCISE 4.3
Find the roots of the following quadratic equations, if they exist, by the method of
completing the square:
(i). 2x2 - 7x +3=0
(ü) 2x2 + x -4=0
(ii) 4x² + 413x + 3 = 0
(iv) 2x2 + x +4=0
Find the roots of the quadratic equations given in Q.1 above by applying the quadratic
formula.​

Answer 1

Answer:

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