Question

(V1 CUCIUCICIL UI
U.
EXERCISE 8B
If a = 2 and b= 3, find the value of
(i) a + b
(ii) a2 + ab
(iv) 2a - 3b
(v) 5a2 – 2ab​

Answer 1

Answer:

1- a+b

=2+3=5

2- a2+ab

=(2*2)+(2*3) = 4+6=10

3- 2a - 3b

= (2*2) - (3*3)= 4-9= -5

4- 5a2-2ab

= (5*2*2) - (2*2*3)

= 20-12=8

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Answer 2

( 2 + 3) =5

2×2=4 , 3×2=6 , 6+4=10

2×2=4 , 3×3=9 , 4 - 9 = -5

5×2×2=20 , 2×2×3=12 , 20 - 12 = 8