Question

2. Using the identity (a + b)^2 = a^2+b^2+2ab or (a-b)^2=a^2+b^2-2ab,find the squares of the following questions.
a. 99
b. 51
c. 38
d. 101
e 79​

Answer 1

Step-by-step explanation:

• ${(a - b)}^{2} = {a}^{2} + {b}^{2} + 2ab$
• ${(100 - 1)}^{2} = {100}^{2} + {1}^{2} - 2 \times 100 \times 1$

= 10000+1+200

= 10201

Answer 2

Step-by-step explanation:

Hope it will be helpful