(x - 3)(x + 5) = 0 gives x equal to :
3
3 or 5
3 or -5
3 and -5
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Given,
⇒ (x - 3)(x + 5) = 0
⇒ (x - 3) or (x + 5) = 0
⇒ x - 3 = 0 or x + 5 = 0
⇒ x = 3 or x = -5.
Hence, Option 3 is the correct option.
Answered By
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If 4 is a root of the equation x2 + kx - 4 = 0; the value of k is :
-3
2
-2
The equation 2x2 - 3x + k = 0 is satisfied by x = 2; the value of k is :
4
If x2 - 7x = 0; the value of x is :
0 and 7
7
0
0 or 7