Question

3. Simplify using identities

a. 5.89 × 5.89 - 0.11 × 0.11
b. (102)^2
c. (989)^2
d. 105 × 95
e. 9.3 × 8.7

Answer 1

a. 34.68 (Just simplify the expression)

b. 10,404 (Raise 102 to the power of 2 )

c. 978,121 (Raise 989 to the power of 2 )

d. 9,975 (Use long multiplication to evaluate)

e. 80.91 (Multiply 9.3 by 8.7 )