Question

2. If x=-3, find the value of:
(i) 5 - 2x
(ii) x2 + 2
(iii) 6 - x2​

Answer 1

5-2×(-3)=11

(-3)×2+2=-6+2=-4

6-(-3)×2=6+6=12

Answer 2

(i) 5 - 2x

5-2×-3

5-(-6)

5+6=11

(ii) x2 + 2

-3×2+2

-6+2

-4

(iii) 6 - x2

6-(-3×2)

6+6

12