Question

48 100
= 6 or - 54
2.
Since x is the speed of the stream, it cannot be negative. So, we ignore the root
=-54. Therefore, 1 = 6 gives the speed of the stream as 6 km/h.
EXERCISE 43
1. Find the roots of the following quadratic equations, if they exist, by the method of
completing the square:
m 2r-7x+3=0
m 2r +X-4=0
(m) 48? + V3x +3=0
(iv) 21 +1+4=0
2. Find the roots of the quadratic equations given in Q.1 above by applying the quadratic
formula​

Answer 1

2r-7x+3=0

hope it helps you ✌