Question

find the square of 500 using identify (a+b)2=a2+b2+2ab​

Answer 1

Answer:

spilt 500 as 100 and 400

a=100

b=400

100^2+2X100X400+500^2

10000+80000+160000

90000+160000

250000

which is also

50^2

hope this helps

Step-by-step explanation:

Answer 2

${(499 + 1)}^{2} \\ = {499}^{2} + {1}^{2} + (2 \times 499 \times 1) \\ =249001 + 1 + 998 \\ = 250000$

answer : 250000