1, -2
-1, 2
2, 3
-1. -2
-2, -3
Correct answer is A
to find the values of x for which the expression is underlined, let x2 + x - 2 = 0
By factorizing, we have (x + 2)(x - 1) = 0
when x + 2 = 0, when x - 1 = 0, x = -2 or x = 1
The two values are -2 and 1
If Q is a factor of 18 and T is prime numbers between 2 and 18. What is Q∩T?...
In how many ways can 6 coloured chalks be arranged if 2 are the same colour? ...
What is the circumference of latitude 0°S if R is the radius of the earth?...
PQ and RS are two parallel lines. If the coordinates of P, Q, R, S are (1,q...
Express the product of 0.0014 and 0.011 in standard form ...