Question 16
If x2=3, then the value of 3x + 2 is
(a) 20 (b) 11 (c) 132 (d) 8
Given x2=3 On multiplying both sides by 2, we get x2×2=3×2⇒x=3×2=6 Put x = 6 in the equation 3x + 2, we get 3(6) + 2 = 18 + 2 = 20
Question: 5
If x takes the value 2, then the value of x+10 is
(a) 20
(b) 12
(c) 5
(d) 8