Question

find the square of the following number using the identity(a-b)^2=a^2-2ab+b^2.
a98^2
b999^2
c495^2

Answer 1

Answer:

a. Answer : 9604

b. Answer : 998,001

C.Answer : 245,025

By using formula.

See the attachment.

Hope this helps you

Answer 2

Answer:

a) 9604

b)998001

c)245025

Step-by-step explanation:

A) 98^2 = (100-2)^2

= 100^2 - 2*100*2 + 2^2

= 10000 - 400 + 4 = 9604

b) 999^2 = (1000 - 1 )^2

= 1000^2 - 2*1000*1 + 1^2

= 1000000 - 2000 + 1 = 998001

c) 495 ^2 = (500 - 5)^2

= 500^2 - 2*500*5 + 5^2

= 250000 - 5000 + 25 = 245025